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Main Characters

Benjamin Kirby Tennyson (Ben 10)

File:Ben UltimateAlien 8498.png

Original Series

Alien Force/Ultimate Alien

  • Acquired Situational Narcissism: In Ultimate Alien's first season finale he cops to this.
  • Brilliant but Lazy
  • Characterization Marches On: In Alien Force's first two seasons, he was a very different character from what he was before; in season 3, the writers took the liberty of making him more like his younger, immature self...a little too much like his younger self. Fortunately, by Ultimate Alien they moderate his competence and silliness as opposed to focusing on one or the other.
  • The Charmer: He has several girls that like him and doesn't mind that at all, but he doesn't actively pursue women though like a Casanova does.
  • Famed in Story: In Ultimate Alien.
  • Hero with Bad Publicity: Though only with most adults. Teens and younger kids (and a few adults) seem to think he's absolutely awesome.
  • He Is All Grown Up
  • Healing Hands: With the Omnitrix's genetic-repair function.
  • I Hate Past Me: "Hate"'s a strong word, but he finds his 10 year old self to be quite annoying.
  • The Kirk
  • The Messiah: Less so after Alien Force's first arc, but still shows some signs.
  • Mid-Season Upgrade: Ben 10,000 gives Ben all of his locked aliens that he'd used up to that point along with some new ones in the middle of season 2. He also brought back Swampfire and Waybig after the two were eroded into dust by Eon.
  • Older and Wiser: Not much wiser, mind you. He's still a kid at heart.
    • This is subverted when he was at Plumber's Academy. He acts dumb but in the end got a 95 out of 100 because just because he acted dumb, didn't mean he wasn't paying attention.
  • Pride: Deconstructed. By the first season finale, he outright states that he's grown tired of what comes along with his fame. In fact, his constant pestering due to fame and time it took up was revealed to be a major factor for his relationship with Julie taking a big hit.
  • Teen Pregnancy: In a Mister Seahorse way. As Big Chill, he gave birth to 14 alien babies.
  • Took a Level In Badass
  • Took a Level In Jerkass: In the third season of Alien Force.


  • Aesop Amnesia: Every lesson he learns will be forgotten within ten minutes.
  • Belligerent Sexual Tension: With Kai Green.
  • Famed in Story: There's a chapter and a half on him in the Plumber Academy textbook.
  • Flanderization: All of his worst traits come to the forefront here.
  • I Hate Past Me: Despite his immature attitude, he finds his past self's brattiness very annoying.
  • Idiot Hero: Very prevalent here.
  • It Has Been an Honor: When it looks like he and Rook are going to die, they say this to one another.
  • It's All About Me
  • Nice Job Breaking It, Hero: Via time travel, he's responsible for Vilgax.
  • Nightmare Fetishist: He always jumps right into the action especially when it's supposedly haunted and creepy.
  • Oblivious to Love: Poor Ester.
  • Protagonist-Centered Morality: Seems to believe this.
  • Small Name, Big Ego: As Rook points out, while Ben has saved many people across the galaxy, he's never done it alone yet seems to think he's the one thing standing between the universe and complete destruction.
  • Taught By Experience: When briefly mind-swapped with his eleven year old self, he proves much more adept at controlling the infamously glitch ridden prototype Omnitrix. On a larger scale, it's stated he has very little formal training yet lots of real world experience to back him up.
  • Took a Level In Dumbass: To the point that he makes his ten year old self look like a genius.
  • Took a Level In Jerkass: Even more than in Season 3 of Alien Force.
  • Took a Level In Kindness: A better phrase would be "Took a Level In Maturity" as 11 year old Gwen doesn't find him anywhere near a brat as he was when he was 11.
  • What an Idiot!: His breakup with Julie in a nutshell. When she called him, he was in the middle of a video game. You'd expect him to either pause the game or say he'd call her back. He doesn't and Julie misinterprets his anger at the video game as him wanting to break up.
  • Would Hit a Girl: Unlike the original series, he has zero problem with this.

Gwendolyn "Gwen" Tennyson

Original Series

Alien Force/Ultimate Alien


Kevin Ethan Levin (Kevin 11)

  • Disappeared Dad: Devin Levin. KIA, courtesy of Ragnarok. Though this is revealed to be a lie.
  • Energy Absorption: Read the spoilers and you'll understand why he never uses it again after the original series.
  • Greg Cipes: As a teenager.
  • Half-Human Hybrid: Half human, half Osmosian.
  • Heel Face Revolving Door: Went from neutral to evil shortly before his debut, turned good at the start of Alien Force, turned evil again' 3/4 through Ultimate Aliens first season, then reverted back to good in the Season Finale.
  • Long-Haired Pretty Boy: His hair reaches his shoulders
  • Missing Mom: Until near the end of Alien Force.
  • The Other Darrin: As a kid, he had two voices: one in his first appearance, then another in his future appearances.
  • Slasher Smile: Does this a lot as Kevin 11 in Ben 10 and Ultimate Alien.
  • Wicked Stepfather: Kevin implied to have had one in his youth. It turns out to be a completely false viewpoint of Kevin when he's insane; his stepfather is actually a good man.
  • With Great Power Comes Great Insanity: Used in Ultimate Alien to finally rectify his extreme change in character. He falls off the proverbial wagon again five episodes later.

Original Series

Alien Force/Ultimate Alien

  • Ascended Extra
  • Anti-Hero: Slides between Type II and Type III constantly. On rare occasion (like when dealing with Ragnarok), he goes Type IV.
  • The Atoner
  • The Big Guy
  • Book Dumb: Plays at this, but is in fact not. Gwen notes that he's good at math and a top-notch engineer, as well as having a knowledge of history. It helps that he literally hasn't gone to school since the age of 11, and most of what he knows he learned on the streets by doing rather than from books by studying.
  • Combo-Platter Powers
  • Cool Car
  • Deadpan Snarker
  • Easily Forgiven: Only recently has any mention been made of his prior characterization ("criminally insane"). However, there were signs of Ben questioning his trust in the first few episodes until he trusted him entirely. Although given that he antagonized Ben for a whole season, you think it would've taken just as long to have Ben forgive him, not just a fraction of a season.
    • Like much of the Author's Saving Throw involved with Kevin in Ultimate Alien, this is attempted to be explained with a rather convoluted explanation about Ben's subconsciousness and involving Paradox.
      • He gets hit with this trope AGAIN in the Ultimate Alien Season One finale. Energy-induced insanity or not, he literally is forgiven for what the crap pulled after one simply "Sorry, man." See Karma Houdini below.
  • Extra Ore Dinary/Chrome Champion: Capable of turning his body into various metals and/or solid materials that he touches, due to being part Osmosian.
  • Freak-Out: When he's transformed again in Alien Force after he and Ben (unsuccessfully) attempted to hack the Omnitrix. And once more in Ultimate Alien after absorbing the aliens in the Ultimatrix.
  • Heroic Willpower: A flashback in Ultimate Alien reveals he had to concentrate to get back to normal from his transformation in the original series.
  • Heroic Sacrifice: Non-fatal example. He saves the universe and defeats Aggregor, but at the cost of his sanity.
  • If You Kill Him You Will Be Just Like Him: "Vendetta". He doesn't listen. Not that Ragnarok didn't deserve it, though.
  • Indy Ploy
  • James Bondage
  • Jerk with a Heart of Gold
  • Karma Houdini: While no-one wanted to see him get killed since he wasn't in total control of his action, the lack of any sort of permanent consequence for him after his vicious crimes while insane (major collateral damage, attempted murder, possible offscreen murder, etc.) is a little jarring.
    • Not to mention driven further home how everyone seemlessly forgives him after he makes a wisecrack the moment he's reverted back to normal.
  • Kick the Son of a Bitch: Ragnarok.
  • The Lancer
  • Loveable Rogue
  • The McCoy
  • Mid-Season Upgrade: Gets shapeshifting powers in The Vengeance Of Vilgax which make him stronger, which he retains even after being restored to human form. Made a plot point in that if he hadn't got them, they'd have been unable to save the world from Hex. This really helps increase his usefulness to the team.
  • Mighty Glacier
  • Shapeshifter Mode Lock: Alien Force Season 3
  • My Name Is Kevin Ethan Levin. You Killed My Father. Prepare to Die: Quoted verbatim. Then invoked a second time in Ultimate Alien for his old mentor Kwarrel.
  • Redemption Demotion: Subverted. While not as badass as he used to be, he's become smarter during the Time Skip and continues to show it as he spends more time with Ben and Gwen. This especially shows halfway through Ultimate Alien's first season.
  • Reformed Criminal: Mostly. By his own admission, he's not entirely trustworthy -- and a lot of the tech he has in the back of his ride is stolen. Though in his defense, most of the ones he stole from were enemies they were fighting.
  • The Resenter: When he goes insane again after absorbing the Ultimatrix's power Kevin reveals a great deal of resentment towards Ben. Ben always beat him when they were kids, Ben becomes a world famous superhero while Kevin gets turned into a monster, Ben gets a happy's always Ben who gets everything. It's not really made clear how much of this is just the energy-driven insanity speaking and how much of it is real.
  • Roaring Rampage of Revenge: After being driven insane in Ultimate Alien he decides to go on one of these whenever he's not absorbing other peoples powers.
  • Running Gag: His Precious Precious Car keeps on getting destroyed.
  • Tall, Dark and Handsome
  • Tall, Dark and Snarky
  • Teens Are Monsters: Inverted, he was evil as a child, but turned good after turn into a teenager.
  • Troubled but Cute
  • Voluntary Shapeshifting
  • The Worf Effect: He's usually the one who gets his ass kicked the most in battle.


  • Blood Brothers: Admits he's this with Ben.
  • Demoted to Extra: Notice how small his Omniverse sub-folder is?
  • Fake Memories: The Rooters gave him some. Namely that whole thing about his dad having ever existed.
  • Half-Human Hybrid: Retconned away. He's just a human with a mutation that allows him to absorb either energy or matter which was the original intent behind Kevin when the original series was conceived.
  • It's All About Me: Between dumping Princess Looma onto Ben or keeping the Tetramand engine in his car, it's no surprise he chose the latter option.
  • Manchurian Agent: For the Rooters.
  • Never My Fault: Everything related to Princess Looma being on Earth is his fault but don't expect him to admit it aloud.
  • Out of Focus: He doesn't appear nearly as much as Gwen.
  • Perma Stubble
  • Token Evil Teammate: Even Argit seems to think so.
  • Took a Level In Dumbass: Though not nearly as bad as Ben.
  • Took a Level In Jerkass: Possibly due to time away from Ben and Gwen, he's regained a few levels.

Maxwell "Grandpa Max" Tennyson

Rook Blonko

The Omnitrix and Ultimatrix

  • Black Box
  • Clingy MacGuffin: Though by the last season of Alien Force this is no longer true, as Ben knows exactly how to remove the thing whenever he wants. He just doesn't want to. The Ominiverse version however is designed to work only for Ben.
  • Dee Bradley Baker: Unless stated otherwise, this guy voices all the aliens introduced after Alien Force and replaces most of the alien voices from the original series.
    • He's probably breathing a sigh of relief since he's not gonna have to massively overwork himself/ run out of different voices in Omniverse, considering several other voice actors have been hired to voice the aliens.
  • Discard and Draw
  • Empathic Weapon: Confirmed in the finale of Omniverse. Ben even says he should stop complaining about it giving him the wrong alien as it always gives him one to neatly wrap things up.
  • Flanderization: While the Omnitrix had frequent glitches in the Original Series, it was mainly due to Ben's unfamiliarity with the device. Afterwards it seems to just be a Troll.
  • I Cannot Self-Terminate: It can but it won't let its wielder die. In OS/Omniverse it instantly recharged when Ben was on the verge of death and always had the perfect alien lined up to survive whatever threat he was facing. Averted in UAF because, for some reason, this function can be turned off.
  • Imported Alien Phlebotinum
  • Informed Ability: The Omniverse Omnitrix is supposed to be perfect yet it has inconsistent transformation time and constantly gives the wrong alien along with many of its additional features activating and overriding others without user consent.
    • This is half-heartedly hand-waved away as Ben just being too rough on it and shorting out systems by accident.
  • Loyal Phlebotinum
  • Magical Computer
  • Magical Database: The Codon Stream. Eventually retconned away. The new model just stores the genetic information in its internal database.
  • Self-Destruct Mechanism: Depending on how long it's charged, it could blow a person's arm off (that is, unless they're Made of Iron) or destroy the whole damn universe.
  • Shapeshifting
  • Suddenly Voiced: By Yuri Lowenthal from Alien Force onward.
  • Suspiciously Similar Substitute: The Ultimatrix.
  • Transformation Trinket
  • Universal Translator

Current Ultimatrix Playlist

Aliens Ben uses in Ben 10: Ultimate Alien.

Alien X (AF-13)

AmpFibian (UA-08)

Armodrillo (UA-09)

Big Chill/Ultimate Big Chill (AF-04, UA-03)

  • Ambiguous Gender: Ben is a biological male but Necrofriggians don't seem to have genders or at least not in the conventional sense.
  • An Ice Person
  • Breath Weapon
  • Cape Wings: Has antennas and four pair of wings that folds around him like a makeshift hooded robe when out of use, giving him the appearance of a phantom.
  • Fauxshadow: One episode has him going out of Ben's control, and Gwen believes that he's following in the footsteps of Ghostfreak, since they're both ghost-like aliens. But actually, no, Big Chill was just getting ready to become a parent.
  • Glass Cannon: Unless he's using his intangibility.
  • Harmless Freezing: Unless Ben engaged in a major Bloodless Carnage slaughterfest in "Hit 'Em Where They Live", BC's ice is like this.
  • Mister Seahorse: Asexually once every 80 Earth years.
  • Monster Is a Mommy: Took control over Ben to eat all the metal in sight and became hostile when approached or when Kevin attacked the structure he had built with the devored metal, but he was only protecting his eggs.
  • My Instincts Are Showing: Necrofriggians are asexual and lays eggs once every 80 years. When the time comes, Big Chill's hormones override both Ben's personality and the Omnitrix.
  • Our Ghosts Are Different
  • Technicolor Fire: Reversed. Big Chill blows blue ice breath, while Ultimate Big Chill breathes red "ice flames" that create an instant ice sheet glacier.
  • Winged Humanoid: Specifically moth-like wings.

Blitzwolfer (OS-31)

Brainstorm (AF-07)

Cannonbolt/Ultimate Cannonbolt (OS-15, UA-06)

ChamAlien (UA-32)

Chromastone/Diamondhead (AF-05, OS-01)


Ditto (OS-41)

Eatle (UA-42)

Echo Echo/Ultimate Echo Echo (AF-02, UA-11)

Eon (Race Against Time)

See Villains section.

Eye Guy (OS-48)

Fasttrack (UA-28)

Fourarms (OS-02)

Frankenstrike (OS-38)

Gax (Reboot)

Ghostfreak (OS-04)

Goop (AF-09)

Grey Matter (OS-02)

Heatblast (OS-01)

Humongousaur/Ultimate Humongousaur (AF-02, UA-06 [2])

Jetray (AF-03)

Jury Rigg

Lodestar (AF-31)

Nanomech (Alien Swarm)

NRG (UA-16)

Rath (AF-39)

Ripjaws (OS-03)

Shocksquatch (Ben 10 & Generator Rex: Heroes United)

Snare-Oh (OS-37)

Spidermonkey/Ultimate Spidermonkey (AF-08, UA-01)

Stinkfly (OS-02)

Swampfire/Ultimate Swampfire (AF-01, AF-46)

Terraspin (UA-12)

Upchuck (OS-39)

  • Big Eater: Except he can't digest what is normally considered "food", leading to...
    • This Billboard Needs Some Salt: At one point, he drinks an animated "Mr. Smoothie".
      • In the original series, this is quoted as Ben exclaims that Upchuck is a bottomless pit, but just can't eat regular food.
  • Breath Weapon: Upchuck can fire laser beams from his mouth (or as he called them in Upchuck's debut 'exploding loogies'), though it has only been used twice (first against the Forever King in the original series then later on against Chromastone (who had escaped from the Omnitrix) in alien force. Though he prefers to fire exploding green energy pellets instead.
  • Dave Wittenberg: His voice in the original series.
  • Extreme Omnivore
  • Glass Cannon
  • Meaningful Name: When he showed off his powers of 'exploding loogies', Ben exclaimed that he had 'Upchuck power', that is to say, acidic vomit.

Upgrade (OS-04)

Water Hazard (UA-01)

Way Big (Secret of the Omnitrix [3])/Ultimate Way Big (UA Finale)

Wildmutt/Ultimate Wildmutt (OS-01, UA-32)

Wildvine (OS-20)

XLR8 (OS-01)



  • Arch Enemy: To Ben. Runs in the family, before Ben, he considered Ben's grandfather Max his archenemy.
    • To the point that in the Grand Finale of Ultimate Alien, Ben is more worried about Vilgax than he is about Diagon. And rightly so.
  • Badass Normal: Normal isn't the ideal word to describe him but he's the most feared being in the galaxy and the only thing he has that might be considered a superpower is the ability to breathe underwater but that's due to coming from an aquatic species. His main strengths are his genius, manipulative skill and powerful armor.
  • Big Bad: Original series season 1, Secondary Big Bad in Seasons 2,3,& 4, Secret of the Omnitrix movie, and Alien Force season 3. He also serves as the True Final Boss of Ben 10: Ultimate Alien. Basically for the entire series.
  • Cthulhumanoid: Worth note is he's actually mistaken for another Great Old One in Ultimate Alien.
  • Didn't See That Coming: His biggest flaw. His defeats always result from something he didn't expect to happen and he has difficulty dealing with it when it happens.
  • The Dreaded: Is considered the most dangerious being in the entire universe and feared by nearly everyone. The only time anyone hasn't feared him was Diagon, who Ben was less worried about than Vilgax. And rightly so.
  • Expy: To some degree, both series may have been trying to model him off of Darkseid, with the first series having a generally merciless murderer, and was feared by almost everyone in the galaxy, in Alien Force, he owns his own world, and even has what seem like the Omega Beams.
    • He also seems to be an Expy of Cthulhu, as he has a head of an octopus and green skin but has no wings, but unlike Cthulhu, he is being mistaken for another Great Old One rather then being a Great Old One.
  • Galactic Conqueror
  • Informed Attribute: His empire. He's only ever seen conquering one planet.
  • Joker Immunity: No matter what, he is going to survive whatever life-threatening danger he's gotten into, whether it be a nuclear explosion or being thrown into space (though his implants make that one outright plausible). Even in a future where he was literally torn to pieces, he's just brought back to life. The Omnifacts, however, confirm that Vilgax will meet his end approximately 200 years in the future.
    • It was actually lampshaded by Ben in the Alien Force finale:

  Ben: He has survived worst [than his own ship's explosion].

    • And again in the Ultimate Alien finale.

 Kevin: I thought Vilgax was dead.

Ben: Which time ?

  • Made of Iron: He survived a point-blank nuclear explosion, and that was before he got enhanced!
  • Morality Chain: Weirdly enough, he seems to be Ben's. Vilgax appears less and less in each series and Ben Takes a Level In Jerkass in each one.
  • Shadow Archetype: If Ben decided to use the Omnitrix for nefarious purposes, there's a good chance he'd wind up exactly like Vilgax.
  • Vilgax Can Breathe in Space
  • Villain Decay: Probably the most infamous example in Western Animation. In the original, he was unstoppable but in Alien Force, Diamondhead was able to singlehandedly beat him. You know the same Diamondhead who's planet Vilgax conquered and blew up.
    • Averted in Ultimate Alien where he's crafty enough to (temporarily) become a god but played painfully straight in Omniverse where Ben (and the audience) refuses to take him seriously.

Original Series

  • Badass
  • Dangerously Genre Savvy: He spent a lot of time studying the Omnitrix, giving him the ability to turn it off whenever he wants to. He also exploits Ben's inability to not go to areas where evil's afoot. Most of the time he fails is because, as detailed above, something that he never expected happens.
  • Evil Overlord
  • Implacable Man
  • Knight of Cerebus: Any episode he had some sort of presence in, the tone would become less humorous.
  • Lightning Bruiser: He moves amazingly fast even after he uses the implants to make his arms stronger, which makes them swell up.
  • Sadistic Choice: In "Secrets", he attacks the Rustbucket and holds Gwen and Max hostage, and would only let them go if Ben handed himself over. Ben relented.
  • Steven Blum
  • Villainous Breakdown: It's subtle, but every time Vilgax appears after the season 1 finale, he's slightly more erratic, and he gets progressively more hellbent for the Omnitrix on Ben's wrist, then again, when you're a galactic overlord constantly getting beaten down by a kid, his grandpa, and his cousin, that does guarantee a breakdown.
    • Made much more obvious in The Movie. He goes from just going after the Omnitrix to being bent on killing Ben to get it. This is the result of him being thrown into the Null Void, which he displays a Twitchy Eye whenever its mentioned. This goes so far that he turns up a chance to get the Omnitrix if he shuts down its self destruct (which he's probably smart enough to do so) and saves the universe because it doesn't involve killing Ben.

Alien Force

  • Even Evil Has Standards: Subverted; his respect of the Galactic Code in Vengeance of Vilgax was, if anything, Pragmatic Villainy, as it allowed him to easily conquer 10 worlds without wasting any resources and gain several new powers in the process. In the following episodes, he has no problem breaking said code.
  • Hypocrite: In addition to the above, he pans Ultimos for cheating via teammates but he himself has no problem using his myriad of equipment to turn the tide in his favour.
  • Kneel Before Zod: Attempted this on Ben in the finale after he took the Omnitrix from him. It didn't work.
  • Mega Manning: Begins defeating heroes across 10 worlds and absorbing the powers of those he defeated.
  • Noble Demon: It's implied in Ghost Town that he actually cares to some extent about his people. Unclear if he really was this or if it's just his Villain with Good Publicity status.
  • One-Winged Angel: Though not quite as frightening as it could potentially be, as seen here. According to Word of God, he could always do this, but there weren't many situations were it would actually come in handy.
    • Fortunately for him, this form happened to fit the description of the alien worshipped by the Flame Keepers Circle, allowing them to play them as pawns in Ultimate Alien.
  • The Other Darrin: James Remar, John Dimaggio in the Vilgax Attacks video game. [4]
  • Villain with Good Publicity: Implied to have gone that route since the Card-Carrying Villain persona didn't fare well for him. It worked out pretty well for him, as it let him conquer 10 worlds in a fairly short length of time.

Ultimate Alien

  Vilgax: When I'm done with this planet, you won't recognize it!

  • God Guise: Was mistaken for the alien worshipped by the Flame Keepers' Circle, Diagon the Knowledge Bringer. He's just enough of a Manipulative Bastard to make complete use of this, gaining a group of very competent minions with Undying Loyalty towards him. This does have a drawback, however, as only his One-Winged Angel form resembles Diagon and he can't revert to his normal form in their sight. Bonus points as Diagon is named after an actual pagan god and a Great Old One.
  • How the Mighty Have Fallen: Subverted. While he's lost his empire (since he was declared dead, it ended up crumbling without him) and is trapped on Earth, he's gained a legion of surprisingly competent and dangerous henchmen who have Undying Loyalty towards him.
  • MacGuffin Delivery Service: His obsession with gaining Diagon's power causes him to deliver its heart's power back to the Eldritch Abomination, despite Ben warning him that him was being manipulated.
  • Manipulative Bastard: Weakened from his previous battle, he gladly played first the role of a sideshow freak to regain his strength and then as Diagon, an alien worshipped by the Flame Keepers' Circle, to get himself a personal cult of followers that would do absolutely anything he desired. He even managed to trick Julie into working for him for a short time.
    • In the end, it turns out he was manipulating Diagon the entire time to steal his power.
    • And again after Ben defeated him and took Diagon's powers from him, he tried to corrupt Ben by convincing him to use it to go Knight Templar. He almost succeeded.
  • Nice Job Fixing It, Villain: Diagon was crushing the heroes with little effort...until Vilgax made his move and absorbed his powers. His own ego pretty much does the rest.
  • Not So Different: Vilgax invokes this with Ben in the finale, claiming they both use power to impose their will on the universe.
  • Out-Gambitted: Diagon thought he was in control of Vilgax the entire time. He wasn't, Vilgax was really the one manipulating Diagon the entire time.


  • Brought Down to Normal: Since Ultimate Alien, he's lost his myriad of abilities and is now just a normal Chimera Sui Genesis in terms of powers. He makes up for it by being more manipulative than ever.
  • Fangs Are Evil
  • From Nobody to Nightmare: Back in the 1700s, he was exiled from his homeworld for "ambitious disobedience". Now he's a feared conqueror.
  • Fusion Dance: He uses Malware's remains as a battlesuit allowing him to mix the Mechamorph's powers with his own arsenal.
  • Hoist by His Own Petard: His Mechamorph armor is vulnerable to the properties of his own warp core. As such, he's petrified when thrown into it.
  • Noodle Incident: Ma Vreedle made him cry. When he sees her on Earth, Vilgax hightails it away.
  • Villain Decay: Zig-zagged. If he's the main threat, he's a full on Knight of Cerebus but if he's not (yes even if there are other serious villains in the episode), he's the butt of jokes. Ben doesn't even seem to be trying to take him seriously at this point.
  • Weak but Skilled: Not as strong as he once was but makes up for it in manipulative skills.
  • You Have Outlived Your Usefulness: To Eon and all the evil alternate Bens. He wipes out the entire Ben 10 multiverse save for the timeline without an Omnitrix so he can conquer it at his leisure.


  • Avenging the Villain: attempts this on Ben to avenge Vilgax's apparent death. He fails.
  • The Dragon: To Vilgax.
  • Evil Genius: He appears to be an brillant scientist and often is the one building devices for Vilgax.
  • Expy: More than a few have noted that, though he doesn't care to overthrow Vilgax, he shares quite a few traits with Starscream.
    • Omniverse makes it even more blatant and he's pretty much an organic version of Prime Starscream.
  • Mysterious Past: We have no idea where he comes from, what his species is like or what made him so loyal to Vilgax. All we know is that he comes from one of the ten worlds Vilgax conquered in the Time Skip.
  • Not-So-Harmless Villain: For most of the series, he was a rather passive character, usually leaving his master do the fight while he sticked to scientist and servant purpose. During the episode where he attempts to avenge Vilgax, however, he proves to be a surprisingly effective fighter who can stands toe to toe with Ultimate Spider-Monkey.
    • Then again, Ben rarely spares any thought to what happens to him and outright admits he didn't care where he vanished to after Diagon.
  • Smug Snake: He is extremely arrogant to anyone other than his master, including Ben.
  • Undying Loyalty: He is incredibly loyal to Vilgax, going as far as trying to avenge him after Ben apparently killed him, and kept serving him even after his empire fell apart. Considering Vilgax is not above threatening him occasionally, this truly is loyalty.

Dr. Animo


  • Arch Enemy: Comes to see Gwen (or rather, "Lucky Girl") as this, though from a story perspective Charmcaster fits the role for her better.
  • Abusive Uncle: To Charmcaster, particularly in the original series.
  • Dark Is Evil: Word of God says that his mana is black and red due to his evil soul.
  • Even Evil Has Loved Ones: Played with; he is ruthless and quite abusive to Charmcaster in the original series, but openly admits he does care about her in Ultimate Alien (though he still refused to come and help her, believing it was suicide). According to Word of God, their relationship is complicated.
  • Evil Albino
  • Evil Sorcerer
  • Evil Uncle
  • Freudian Excuse: The destruction of his people and home by Adwagia. Of course, as the Dark Is Evil example above shows, he let it get to him in a negative way much more than his niece Charmcaster did.

Charmcaster (Hope)

  • Anti-Villain: Between Type I and Type II.
  • Arch Enemy: To Gwen
  • Bastard Understudy/Deceptive Disciple
  • Black Magician Girl: "I don't respect ANYONE!"
  • Broken Bird: As of "Enemy of My Frenemy", even more broken than before.
  • Cry Cute: Happens frequently in Ultimate Alien.
  • Uncle's Little Villain
  • Dark Magical Girl: Was always a play on this trope, and became even moreso in Ultimate Alien.
  • Deal with the Devil: And that devil was DIAGON!
  • Defrosting Ice Queen: In "Where the Magic Happens", she becomes slightly more friendly to Gwen as the episode progresses. Sadly undone by "Enemy of my Frenemy", which makes her more of a Broken Bird than before.
  • Dimension Lord: She becomes the ruler of Ledger Domain after defeating Adwaita.
  • Do with Him as You Will: In "Couples Retreat", after finding out Dark Star was just using her for her power, she takes it all away from him and leaves him at the mercy of the heroes.
  • Enemy Mine: Gwen convinces her to help them retrieve a piece of the Map of Infinity from her home before Aggregor does. They fail.
  • Evil Counterpart: To Gwen.
  • Freudian Excuse: She was raised by her uncle, who is shown to regularly threaten her if she doesn't obey him. Gee, is it any wonder she turned out bad?
    • The fact that every other human from her home was killed, including her father, doesn't help any either.
  • Heel Face Revolving Door: In Ultimate Alien. She's bad, then good, then worse, then neutral but working toward becoming good.
  • Hot Witch
  • I Choose to Stay: Takes the trio back home, but stays to fight for hers, aware that she'll be trapped.
  • Kari Wahlgren
  • Kick the Son of a Bitch: She betrayed her uncle for her own evil goal, but Hex definately had it coming.
    • Sucking out Adwagia's soul for her Deal with the Devil. While her other victims were innocent and didn't deserve it, he certainly did.
    • The end of "Couples Retreat". Charmcaster is good with this trope.
  • Little Miss Badass: In the original series.
  • Not-So-Harmless Villain: Though it wouldn't seem like it given many of her past performances, she manages to rack up a body count only the Highbreed and Vilgax have managed to exceed, and they have entire armies. She even killed the heroes, something no other villain has managed. The body count was only temporary, as all her victims get brought back from the dead shortly afterward, but that hardly detracts from the fact that she pulled it off.
  • Perky Goth: Well, sort of gothish anyway...
  • The Rival: To Gwen and, to a lesser extent, to Rojo in the Negative 10.
  • She Who Fights Monsters: Became even worse than Adwagia to try and revive her father, something he calls her out on, resulting in a My God, What Have I Done? Villainous BSOD. Thankfully, she seems to have gotten better in the next episode, trying to be a better ruler and person (though not exactly a smarter one...)
  • The Starscream: To Hex in her first appearance.
  • Took a Level In Dumbass: Seems to have happened to her as of Ultimate Alien.' In "Couple's Retreat", she's acting like The Ditz. Granted, she does have the motive of wanting to fill her now-empty life with ANYTHING, even a giddy, girlish love for Darkstar, but still....
  • Took a Level In Jerkass: She wasn't nice in the original, but she's much bitchier in Alien Force, especially to her golem minions.
  • Took a Level In Kindness: In "Where the Magic Happens" (and again in "Couples Retreat", following an extreme reset.)
  • Villainous BSOD/Heel Realization/My God, What Have I Done?: After she makes a Deal with the Devil to revive her father by sacrificing all the souls in her home world, he tells her she's become She Who Fights Monsters and he doesn't want to be revived at the cost of some many other lives, which makes her cry as she realizes he's right. He breaks the deal, undoing everything, leaving Charmcaster completely crushed, the one thing she'd spent her entire life trying to obtain now forever out of her reach.
  • White-Haired Pretty Girl
  • You Killed My Father: Says this to Adwagia.

The Forever Knights

  • A Father to His Men: Sir Cyrus, leader of the fourth Forever Knights faction, is extremely protective of his men.
  • Ancient Conspiracy: A very complex one. One faction believes the conspiracy is to kill an Alien Dragon, another thinks its to use alien tech to conquer the world, and yet another thinks its to follow the path of "The First Knight" who founded them.
  • Big Bad: The Forever King; Driscoll, who was Forever King in the original series, is half the Big Bad of the fourth season (Vilgax being the other half through the "Secret of the Omnitrix" three-episode movie.) and Old George for season 2 of Ultimate Alien.
  • The Dragon: Enoch in the original series.
    • Driscoll to Old George in Ultimate Alien.
  • Enemy Civil War: To date there are at least four Forever Knight factions, all of which think of the others as frauds. Each has their own Forever King, in order of appearence: Driscoll, Patrick, Urian, and Cyrus. This was lampshaded in one episode where Ben and company had to ask which faction the present group they were facing were with. Turns out they were with the fourth faction they hadn't met yet.
    • Recently Old George, said First Forever Knight, returned and untied all four factions.
  • Evil Counterpart: To the Plumbers, especially in the original series.
  • Faceless Mooks: Exaggerated in "Reflected Glory" when we see Knight with his helmet on, while brushing his teeth.
  • Fantastic Racism: Quite literally their mission statement; its just after Old George left last, they sorta drifted off onto other goals. Until he returned.
  • From Nobody to Nightmare: Driscoll started out as just a veteran Plumber, but after being outed as someone using alien technology for his own selfish reason, joined the Forever Knights, then managed to work up the ranks, becoming the Forever King.
  • Hypocrite: Aliens are evil and must all be killed. Their technology on the other hand can be used freely.
  • Killed Off for Real: In the finale of Ultimate Alien, their group is reduced to about five members.
  • Let's Get Dangerous: Thanks to Old George, they've gone from four splintered and laughable factions to a deadly force with Powered Armor forcing aliens to either leave the planet or die, to the point where Ben has to threaten to kill every last one of them to get them to retreat.
  • Lotus Eater Machine: Enoch put Ben into one, and then was trapped in it himself, the first series trivia pop-ups say that Enoch would be in that Lotus Eater Machine for years, he did recover, though.
  • Noble Demon: Enoch on occasion, particularly the "Ben 10" video game in which he tries to stop Vilgax and save the world, though using extreme measures to do so.
    • The Ultimate Alien groups also have traits of this, teaming up with Ben and company on occasion.
  • Powered Armor
  • Punch Clock Villain: Some of them; one is even shown playing a MMORPG on his off time.
  • Schizo-Tech: One suit was from the ancient Aztecs.
  • You Have Failed Me: The Forever King Driscoll leaves Enoch trapped in virtual reality for failing him too many times.
    • Subverted with Old George towards Driscoll.

Sir George


Sunder the Retriever


  • A God I Am: He doesn't explicilty stats it, but he could as well say so. Of course, considering what he is.
  • ...And Show It to You: Old George tore out his heart. This didn't kill him and he had to be turned into Sealed Evil in a Can.
  • Big Bad
    • Bigger Bad: Was the dragon the Forever Knights were founded to fight, making everything connected to them his fault.
  • Cosmic Horror
  • Cthulhumanoid
  • Dimension Lord
  • Eldritch Abomination: He's not named after a Great Old One for nothing.
    • Just looking at it in a Pensieve Flashback causes Ben, Gwen and Kevin to freak out. Consider what they fight on a daily basis and that says a lot about how horrible it is.
  • Eviler Than Thou: Finds out too late that Vilgax was this to him.
  • Healing Factor: at several points in The Ultimate Enemy, his injuries heal as soon as he gets them.
  • Killed Off for Real: After being absorbed by Vilgax.
  • Multiversal Conqueror: He had taken over a hundred dimensions by the time he fought George, according to Azmuth.
  • Our Dragons Are Different: He is depicted as one by The Forever Knights
  • Out-Gambitted: Though he was the one pulling Vilgax's strings, only to find out too late it was the other way around the entire time.
  • Reality Warper: He displays abilities such as creating an acid rain, size-shifting, stripping George of his immortality
  • Sealed Evil in a Can: Was imprisoned in his universe by Old George. Justified as cutting his heart out wasn't enough to kill it so there weren't many other options.So now he's trapped in Azmuth's sword.
    • It's been confirmed on the credits of "The Enemy of My Frenemy" that HE was the "Old One" who was willing to accept 600,000 souls.
    • Diagon may have ultimately sealed inside Ascalon when Ben uses to to steal his power from Vilgax, if he wasn't killed by Vilgax absorbing him.
  • World-Wrecking Wave: When he comes close to being freed, one of these is set off, turning every unprotected human on Earth into his minions.


  • Big Bad: Of "Race Against Time".
  • Deader Than Dead: In the end, he's erased from time.
  • Depending on the Writer: As detailed in "Tomato in the Mirror", Eon's true nature varies wildly across the franchise.
  • He's Back: He reappears in the actual series in "Ben 10,000 Returns".
  • One-Shot Character: For Ben to use with the Omnitrix, since he's not in it anymore. Justified in that "Race Against Time" was canon, but not with the main timeline.
  • Shout-Out: His plan in "Ben 10,000 Returns" is rather simular to the Big Bad in The One. Wiping out and absorbing all alternate versions of themselves.
  • Time Master: Works on humans and aliens.
  • Tomato in the Mirror: He and his minions are all revealed to be Ben Tennyson, of an alternate timeline. Though since the Eon from the movie intended to turn Ben into a new Eon, we can't be sure he's the original Eon.

The Highbreed

  • All Your DNA Combined: After Ben recalibrates their genetic makeup, this is what happens.
  • Big Bad: Alien Force's first two seasons.
  • The Blank: Their face possess no visible features other than several red eyes that don't even move, making you wonder if they even are actual eyes.
  • Dying Race: The real reason behind their invasion; they wanted to destroy the universe because they were too proud and didn't wanted to die alone.
  • Easily-Thwarted Alien Invasion: Played with; the heroes are unable to stop their invasion using force, and Ben has to solve the conflict peacefully by solving their Dying Race problem so they won't feel the need to destroy the universe anymore.
  • Expy/Captain Ersatz: They are very similar to the Daleks, but Word of God has denied this. It's possible this was simply for legal reasons, as Professor Paradox, a Doctor Expy debuts in the same series and their Xenocyte minions that the use to create the DNAliens resemble dalek mutants (exposed brain, one eye, tentacles)
    • They are also similar to the Reapers from Mass Effect. Older than all other species in the universe (although in the Highbreed's case this may simply be propaganda), they want to enslave or exterminate all other forms of intelligent life in the galaxy (the Reapers) or (possibly all species including non-sentient/non-sapient species other than DNAliens and themselves) the universe (The Highbreed). The fact that the ending of Alien Force season 2 resembles a possible ending for Mass Effect 3 being hybridized with the enemy species and deciding to coexist with other species  is likely a coincidence, as Ben 10 Alien Force season 2 was aired 2008-2009 and Mass Effect 3 came out in 2012 (unless the influence swung the other way) 
  • Fantastic Racism: to the extreme; when one of them got bitten by Humongousaur, he claimed to have been infected, and that he had to leave and disinfect the whole zone. By killing everything around of course.
  • Heel Face Turn
  • Irony: They wished to wipe out all species save their own due to their inevitable extinction, but now they have become amalgamated with those very races.
  • Knight of Cerebus: to the saga as a whole; the beginning of their story arc in the first two seasons of Alien Force marked the point where the saga went into a Darker and Edgier tone, and they were truly menacing and oppressing villains. Similarly, after the end of their story arc, Alien Force suddenly changed tone to get more humorous.
  • Master Race: They claim to be the first one.
  • Omnicidal Maniac: Planned to wipe out all sentient life in the universe.
  • Reality Ensues: Their philosophy of genetic purity resulted in inevitable inbreeding. As a result, they're so genetically sterile that they can't reproduce anymore.
  • Suicidal Cosmic Temper Tantrum: If they were going to die, then they'd take everyone else with them.

The Hive

  • Authority Equals Asskicking: The queen is much larger than the drones and far stronger.
  • Body Double: In "Revenge Of The Swarm", it's revealed the queen Ben already killed was a fake and the real queen was hiding inside Elena.
  • Big Bad: Of the second live action movie.
  • Cassandra Truth: Victor Validus tried to warn the Plumbers the Hive were preparing to attack but no one believed him until the invasion was already started.
  • Hive Queen: The queen of the hive serves this role. However, she's also the only one able to reproduce like a real insect queen and killing her takes the Hive with her.
  • I Am Legion: The Hive's hosts refer to themselves as 'we', even the Queen's host despite the fact she refers to herself in the singular.
  • Nanomachines: They're techno-organic nanite chips.
  • Puppeteer Parasite: Anyone infected by the Hive is put under their control and becomes 'drones' for the queen to control.
  • Shock and Awe: The Hive Queen and Nanomech are capable of this.
  • We Can Rule Together: During their fights with Ben, both queens try to convince Ben to join them as their king.
  • Yandere: toward Ben, after Elena became one with them.
  • You Will Be Assimilated: Their MO is to infect and take over everyone on the entire planet.

Michael "Mike" Morningstar (Darkstar)

Sixsix and Sevenseven




  • A God I Am: His ultimate plan was to absorb the powers of a Alien X and reshape the universe to his whim.
  • All Your Powers Combined: Intends to permanently assimilate Fire, Water, Earth, Wind, and Electric powers from a quintet of aliens from the Andromeda Galaxy.
  • Anti-Mana: Courtesy of absorbing Galapagus.
  • Badass: he is by far one of the most competent villains in the show, possibly in the saga.
  • Badass Longcoat
  • Badass Long Hair
  • Big Bad: For the first season of Ultimate Alien until he ends up hijacked by Kevin 11.
  • Body Horror: His first use of Galapegus' powers involves multiple vents opening on his body. YMMV on how it compares to Ultimate Aggregor.
  • Brought Down to Normal: Thanks to Kevin absorbing his powers. It's assumed he can still absorb matter and energy since that's considered "normal" for Osmosians.
  • Dangerously Genre Savvy: One of the main reason he was so unstoppable for most of the season.
  • Evil Counterpart: To Kevin. As noted below, he is very similar in role and personality to Kevin in the first show, as well as being of the same species, with the same powers and love of absorbing energy. Kevin seems to be aware of how similar they are, and has apparently taken this to heart given how intense he is about stopping him.
    • The Retcon in Omniverse pushes this further: Aggregor is a lab experiment created with Kevin's DNA, presumably by the Rooters Conspiracy who experimented on Kevin and the Plumbers Helpers, making him a Clone of Kevin and Kevin's dark side given life.
  • Expy: Aggregor is basically Kevin if he didn't reform: sadistic, merciless, and with the power to absorb energy, complete with his body mutating to accomodate the stolen alien power.
    • The Retcon in Omniverse pushes this further, see above.
  • Fake Boss: Kevin ends up becoming the final enemy to face in Ultimate Alien's first season.
  • Hidden Agenda Villain: His true goal, to reshape the universe the way he wants, was kept hidden until his last appearance.
  • John Dimaggio
  • Kick the Son of a Bitch: Stealing the power of Addwagia in "Where The Magic Happens".
  • Meaningful Name: He aggregates (collects) the powers of other aliens.
  • Mega Manning: His base power allows him to steal the abilities, and apparently life force, of whoever he touches. However, he can only use the stolen power at a tenth of its original strength (much like fellow Osmosian Kevin), and it eventually wears off. He's built a machine to subvert this, fully and permanently absorbing the power of the five aliens he's hunting at the cost of killing them.
  • Powered by a Forsaken Child: In "The Forge of Creation" he goes after a baby Alien X with the goal of stealing its Reality Warper powers.
  • Rubber Forehead Alien: In his default form he looks essentially like a human with a row of spikes on his head.
  • The Sociopath
  • What Happened to the Mouse?: Word of God says he's currently incarcerated.

Will Harangue

Carl Nesmith/Captain Nemesis/Overlord

  • Broken Pedestal: Ben used to idolize him before finding out how much of a jerk he had become.
  • Even Evil Has Loved Ones: his feelings for Jennifer Nocturne were apparently sincere, or at least became so.
  • Expy: He bears similarities with both Warp from Teen Titans and, to a minor extent, Iron Man.
  • Green-Eyed Monster: the major reason for him turning evil was because of his jealousy toward Ben. Ironically, Ben didn't mean to ruin his reputation and was actually a big fan of him before he turned evil.
  • Fallen Hero: he started out as a superhero, but ended up trying to cause fake kidnapping in order to get popular again, and eventually turned into a criminal due to his jealousy toward Ben. Both Ben and his Agent hinted he had been an actually great hero before.
  • Pet the Dog: surrendered so his accomplice Jennifer Nocturne could get medical attention.
  • Shoot the Dog: he was one of the few villains in the show to be explicitly hinted to have killed human beings. At one point, he even killed an innocent driver just to steal his car.
  • Powered Armor
  • That Man Is Dead: "Captain Nemesis is dead! Now, call me Overlord!"


  • Axe Crazy: in Ultimate Alien, he tried to kill Ben's mother in a very sadistic way while Gwen was watching.
  • Expy: In the first series, some have noted him to be very similar to that of Pennywise the clown. He's much more like The Joker in Ben 10: Ultimate Alien
  • Mind Rape: inflicted this to Ben in his first appearance by taking advantage on Ben's fear of clowns. Ben then payed him back using Ghostfreak.
  • Monster Clown
  • Ninja Pirate Zombie Robot: He is, as some plot descriptions on websites gave him: A Zombie Vampire Clown.
  • Our Vampires Are Different: in his first appearance, he fed of people's happyness. The result when he got all of it wasn't pretty.
  • Same Character but Different: In the first series, he has a very supernatural edge to him. Ultimate Alien made him out to be an incredibly Joker-esque character with none of the powers he demonstrated in the first series, though he still has the same overall personality.

The Vreedle Brothers

  • BFG: often relie on this as their weapons.
  • Beware the Silly Ones: as hard as it is to admit, they can be pretty dangerous due to their massive weaponry. Though if you think about it, it's precisely the fact they are truly silly that makes them dangerous...
  • Bounty Hunter
  • Dumb Muscle: both of them, especially Rhomboid.
  • Even Bad Men Love Their Mamas: They really respect their mother, Ma Vreedle. Too bad she considers them as failure (not that we can object her...).
  • Heel Face Revolving Door: In their first appearance in Ultimate Alien, they're attending the academy to become Plumbers. However, the next episode they're in they are back to being thugs. Gwen scoulds them for this, and they return to Plumbers shortly after.
  • Killed Off for Real: some of them. Of course, since there are an army of them anyway, that doesn't really count...
  • Leeroy Jenkins: they basically don't know how to solve any problem without blowing up things.
  • Me's a Crowd: it's revealed in Con of Rath that there are actually a whole army of Vreedle Brothers, since they are actually clones created by their parents through a kit.
  • Stupid Evil: they take that trope Up to Eleven.
  • Those Two Bad Guys
  • Too Dumb to Live: a ridiculously extreme exemple when they shoot a fusion grenade at Kevin. In a space station. When Argit points out that will not just kill Kevin, but everyone on the station, including them, Octagon admits he "didn't consider this".


A bounty hunter who will apparently serves as the main villain in season 1 of Ben 10: Omniverse.


Julie Yamamoto

  • Bob Haircut
  • Brown Eyes
  • Women Are Wiser
  • Derailing Love Interests: Julie becomes much less in the second season Ultimate Alien. Some of this is having to deal with Ben being famous (it was very justified in the first episode w/ Captain Nemesis), but she's showing new traits such as being overly competitive and short-tempered that weren't originally present, possibly as a misguided attempt at giving her more flaws.
    • She joined what was effectively a cult in "Flame Keepers Circle." She thought it was a corporation that was trying to improve people's lives by introducing alien tech at a faster rate than the Plumbers wanted (despite Kevin and Ben both warning her that such an act typically destabilized planets). It was really a bunch of crazy people worshiping Vilgax, and it was ridiculously clear too, but she grabbed the Idiot Ball firmly until it was beyond obvious she was wrong.
      • And yet in the next episode they brought back Elena, crazier than ever, and had her impersonate Julie as a "perfect girlfriend" for Ben as a sort of Take That to shippers who hate Julie for reasons like her not accommodating Ben enough.
    • Come Omniverse, they broke up because Poor Communication Kills and Julie has completely washed her hands with Ben.
  • A Girl and Her Shapeshifting Weapon/Pet Alien
  • Kid With the Remote Control: Ship.
  • Love Interest: To Ben.
  • Magic Skirt
  • Plucky Girl
  • Shallow Love Interest: Initially appeared out of the blue; she gets better over time.
  • Sixth Ranger
  • Tomboy
  • Took a Level In Badass: Getting Ship helped with this, as he can turn into Powered Armor for her. She's also quite adept with certain weapons.
  • Took a Level In Jerkass: Like everyone else in Omniverse.



  • Cynical Mentor
  • Didn't Think This Through: Most things relating to the Omnitrix:
    • He decided to literally invoke "walk a mile in my shoes" with it and didn't take into account the myriad of warlords and conquering species who might want a device that allows their armies to transform into superpowered aliens.
    • In spite of being one of the most powerful technologies in the universe, the Omnitrix is not user friendly in the slightest. If the user doesn't have a good grasp on aliens and interstellar travel, it's doubtful they know what all the alien holograms are supposed to mean. It also didn't come with an instruction manual and its oddly fragile nature means it needs rather powerful technology to even scan.
    • And to cap it off, the myriad of glitches in all versions with the Omnitrix often ignoring user inputs and overriding other functions. It's so bad that people who make their own knock-off versions seem to have a better success rate than he does.
  • Figure It Out Yourself: "Don't you want to figure it out on your own, like a true hero would?"
  • Heel Realization: He realizes it's just stupid to blow up the universe when the Omnitrix is near self-destruction.
  • Insufferable Genius
  • Jeff Bennett: Save for his debut in "Secret of the Omnitrix".
  • Not So Different: He's immature, selfish, cracks jokes at inopportune times, but when it comes down to it, he can be helpful... sort of like Ben. This is all the more obvious when he says that he likes Ben for saying that he didn't want to figure out how to work the Omnitrix better (or, more specifically, allowing Ben to change forms at will within alien form).
  • Same Character but Different: Was a lot more sarcastic and cynical when we first see him in Secret of the Omnitrix, but is more stoic and serious (though retaining a sense of humor) by the time of Alien Force. Justified in that there was a five year Time Skip in-between appearances.
  • Sink or Swim Mentor
  • The Spock
  • Took a Level In Jerkass: In Omniverse to the point that you could really make a case that Albedo is the good guy.
  • The Watcher

Professor Paradox

Plumber's Kids


  • The Atoner: He was the one responsible for giving Vilgax the crystal that inevitably became Vilgax's tool for destroying Tetrax's planet.
  • Badass
  • Bounty Hunter: Initially, he also worked for Vilgax, but, he's decided to fight against him for what he did to his home planet.
  • Hover Board: Also his production name.

Jimmy Jones

EunyceAKA the Unitrix

  • Artificial Human: She is actually a Omnitrix-like device created by Azmuth to store DNA, who turned into a girl after scanning Gwen's DNA.
  • Everyone Loves Blondes: Ben sure does.
  • Expy: Her arrival to Earth and first appearance has some shades of Supergirl. Her voice actress would later voice Supergirl!
  • Flawed Prototype: To the Omnitrix. Then again, she actually works properly.
  • Friend to All Living Things: One of her abilities.
  • Love Interest: To Ben in her first appearance.
  • Took a Level In Badass: In her first appearance, she was a naive girl who could barely stand a fight. The next time we see her, she can fight toe to toe with Arachnichimps DNAliens.


Cash and JT

Carl and Sandra Tennyson



The Andromeda Five



  1. He uses a different voice for teen Ben
  2. Although he was used by Albedo in AF-45
  3. Part 3, or technically OS-52
  4. Somewhat of a shame that Remar was used in the show and not DiMaggio, as the former sounds nothing like Vilgax from the original show, while the latter does an impressive Steven Blum imitation.
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