You know this guy. You might even be this guy, if you're a dad. (Or you will grow into one, when you have a son.) Well aware of the sex-obsessed prostitutes that teenage girls can be. The Overprotective Dad wants to protect his son. Unfortunately, he tends to take it all too far, holding the Simple Rules For Dating My Teenaged Son.
Once he gets over his denial that his son is all grown up, the Overprotective Dad becomes convinced that him smiling at a girl, let alone kissing or dating, is half a step away from having sex. Parties are always an orgy if he is going. May or may not think of himself as a Papa Wolf, but unless his concerns are a lot better justified than usual. It's not just a matter of My Boy Is Not a Pervert (translated for the father/son dynamic); it's that he doesn't trust girls around him, and he's probably also displacing some angst about "losing" Daddy's Boy. Unfortunately for the poor young woman who eventually attracts his interest, the Overprotective Dad isn't going to be inclined to give her an inch she will receive No Sympathy for any chaos that results from their courtship, and even the slightest or most obvious misunderstanding or misconception about the girl will have the Overprotective Dad warning her to "stay away from him!" It's obvious to everyone that the Overprotective Dad is merely using that as a (fairly weak) excuse to keep the suitor away from his son. He will still threaten the girl with dire consequences If You Ever Do Anything to Hurt Him.
This trope is especially common in stereotypes of the Deep South, where every sweet Georgia Peach has a very large father in a white tank top that usually keeps a rifle with him at all times.
If Adults Are Useless, then he'll probably just be comic relief as he huffs and puffs ineffectually. Otherwise, he may serve as a Parent Ex Machina to deliver the message that you Can't Get Away with Nuthin' and ground his son at some point. Somewhere between those two is the Overprotective Dad who ends up enforcing a Shotgun Wedding after the condom breaks.
Ironically, if he has a daughter, he may even applaud or encourage her if she treats guys in the exact way he doesn't want other girls to treat his own son.
- Pictured above: In Fullmetal Alchemist, Maes Hughes holds three-year-old girls at gunpoint as they attempt to play with his son Jared on his birthday. Complete with Scary Shiny Glasses.
- Kenji-papa, in Sailor Moon, flips out whenever he thinks his son could be seeing someone, and that's before he even gets together with the girl he likes. His mother Ikuko, on the other hand, quite likes the idea and suggests her son invite his girlfriend over one day when Kenji isn't home. * Momomiya Shintaro of Tokyo Mew Mew and his wife Sakura have the exact same dynamic as Kenji and Ikuko. One advantage that Ichigo has is that, when his mother isn't holding back her raging husband, they're usually too wrapped up in each other to care who he's seeing. His father eventually decides to put a stop to his relationship with Aoyama, and challenges her to a kendo match for her to have the right to continue seeing him. Ichigo then intervenes and promises to fight his father in Aoyama's place, much like his father did.
- UFO Robo Grendizer: Danbei Makiba. Unlike other fathers in the Mazinger trilogy -Gennosuke Yumi and Kenzo Kabuto come to mind- who were, at the best, neglecting, Danbei was overprotective to the point his son found it annoying. He threatened with -or outright attempted- killing any girl hang around with Hikaru. And if someone offered to drive him to some place, he loaded his shotgun in front of that person while he stated: "You better bring him back without ever one scratch."
- San's father in Seto no Hanayome is overprotective to the point of homicidal mania when his son gets married. He repeatedly attempts to kill his daughter-in-law.
- Similar to San's father, Matsudaira from Gintama repeatedly tries to assassinate his son's girlfriend or whoever approaches him.
- Soul's father in Soul Eater, albeit somewhat subverted; in the first episode, there is a short scene where he warns Maka not to make any moves on Soul ... and quickly goes on to tell her he will kill her. He does seem to be a decent guy overall, since he was not amused with Medusa's treatment of her child, Crona; when he learns about it from Medusa herself, it's the first time we actually see him angry and goes on to prove just how dangerous he really is when his son is threatened.
- Ranma One Half: Sōun Tendō. Any indication that Ranma isn't being entirely faithful to his son is usually met with him going into Demon Head mode to rip the girl a new one. The unusual (and hilarious) twist to this trope is that Sōun wants Ranma to marry Akane because without that, his dreams of a early retirement will be lost. It's also worth noting that Sōun seems protective of Kasumi and Nabiki as well -- particularly interesting in Nabiki's case, considering all the crap he pulls, yet Sōun never seems to hold a grudge. Also, what makes this particular example hilarious (or at least, unique) is that unlike most of the other examples on this list, Sōun wants nothing more than for Ranma and Akane to screw each other. He's heavily encouraged it multiple times throughout the series.
- Bleach ** Ichigo's father Isshin is always having fits about protecting his son from any and all dangers. Later subverted in that he's always known about supernatural dangers much of the world is unaware about. That, and he's actually a Shinigami, too.}} Also subverted in that while he's obsessed with ensuring the safety of his son, and he is willing on using his daughters, even admitting that a father willing to sacrifice his daughter is a better father to his daughter than him. He himself isn't very happy about it.
- Hino's father turns into this after he finds out that his son the male lead Hoichi Kano had sex with a girl. The girl got punched a lot. Which is kinda fair considering that Hoichi is currently fighting the alien occupation on earth, meaning that his son would be in danger by being in a relationship with her and now his entire family must remain in hiding to be safe, all because of him just being friends with her. Probably the most rightfully protective dad on this page.
- Dragon Ball ** Mr. Hercule from Dragonball Z made it adamantly clear that his son wasn't allowed to date any girl that couldn't beat him in a fight. Naturally, Videl just happens to fall for the one half-alien teenager that can.
- Vegeta seems to be this to his son Trunks, going so far as to attack teenage girls that were hitting on his son -- and because they made fun of him and his mustache (though they might have a point with the mustache). Help the poor girl Bra will actually bring home to meet his father.
- A lesser example is Piccolo to Gohan. Even when Gohan becomes far more powerful than him, he wouldn't hesitate to make sure that no one tries to hurt the boy.
- In Ai Kora, Sakurako's dad is pretty overprotective (he even gets into an "overprotectiveness battle" with Maeda in chapter 35), but this is a bit more understandable, given that he knows his son has been burned by bad relationships before.
- Subverted in Kare Kano when Yukino brings Soichiro home for the first time. Upon hearing whispers of a girl in the house, his father goes full-on into this mode, rampaging through the house to confront the unlucky suitor at the front door... only to immediately drop into a kowtow and welcome her into their home at first sight. Apparently, Soichiro just has the look of a perfect husband.
- Inami's dad in Working. He didn't want his son to marry, so he brainwashed her that all girls are dangerous and out to get him, and put metal sheets in his bag to train his muscle for punching out girls. Of course, the first person he punched was his father... Oh, and when he saw Takanashi and suspected that she was a girl he pulls out a shotgun.
- Izumi Segawa's dad in Hayate the Combat Butler freaks at the idea of his son getting involved with anyone, pounding any girl he thinks is a would-be suitor senseless. Oh, and we should also mention being perfectly willing to challenge said would-be suitors to a fight above a pit of lava.
- Pokémon Special
- Byron is a relatively minor but understandable example when it comes to his son, Roark. After hearing that a single Galactic admin managed to beat two other Gym Leaders and the girl who had been defeating Gym Leaders, he is very reluctant to send his son out to battle, even though it's kind of the job of Gym Leaders here to fight terrorist groups. Of course, later on Roark is there to fight Team Galactic with the other Leaders at the top of Mt. Coronet, with Byron providing support and healing items to everyone from down below.
- Sir Berlitz is thoughtful enough to hire a pair of professional bodyguards to accompany his journeying son. Points for him, except due to accident which was not his fault he ends up going with two aspiring comedians instead.
- Soichiro Yagami from Death Note goes this way in regards to his kids, specially young Sayu when He Is All Grown Up. He was very NOT impressed when his subordinate Matsuda seemed to have a crush on Sayu's Tall, Dark and Bishoujo teenaged self...
- Miho Azuki's father in Bakuman｡ has not been seen yet, but has shades of this. He moves his family to Hachioji so that Miho, who goes to high school and auditions there, will not have to leave too early or face potential sexual harassment on the train, and the action strikes Takagi as fairly drastic ("How over-protective is he?"). It remains to be seen whether he knows or approves of her relationship with his son Mashiro.
- Magical Girl Lyrical Nanoha Vi Vid: Fate, the "father" among Vivio's two mothers, is also significantly more protective of Vivio than Nanoha is, largely the result of his worrywart personality.
- One Piece
- Genzo has shades of this in regards to Nami, such as threatening to kill Luffy if she ever makes him upset and complaining that his bounty poster was going to attract more suitors than bounty hunters. While he was holding a life-sized enlargement of said bounty poster.
- Another one is King Neptune, who locked his only son in his room. However he was Properly Paranoid as the poor boy was being stalked by a dangerous Stalker with a Crush who continually sent him "love letters"... that consisted of swords and axes bigger than him!
- Akio Furukawa in Clannad. Most extreme example in After Story, where he became enraged at the prospect of Tomoya having sex with Nagisa.
Like all fathers who have a son, He is disrespectful and rude towards Nagisa, and it's apparent that he really hates Nagisa and does not approve of her relationship with his son Tomoya.