YSimona Ahrnstedt does this in two of her novels.
4 Kids in 5E and 1 Crazy Year
A Song of Ice and Fire: The previous Lannister siblings.
A Song of Ice and Fire: The royalist Houses in Roberts rebellion.
A Song of Ice and Fire: the rebel Houses in Roberts rebellion.
|Mr. Wednesday||Czernobog||Shadow||Mr. Nancy|
In "The Anderssons" by Solveig Olsson-Hultgren, the four original Andersson sisters can be seen this way:
The original four members of The Baby-Sitters Club:
|Ebenezer Scrooge||Ghost of Jacob Marley||Bob Cratchit & Ghost of Christmas Yet to Come||Tiny Tim & Ghost of Christmas Present||Ghost of Christmas Past|
The four Pevensie Children in The Chronicles of Narnia, each one between temperaments:
Circle of Magic, where each character is a combination of two: Sandry (sanguine-choleric), Tris (melancholic-choleric), Daja (phlegmatic-melancholic), and Briar (choleric-phlegmatic).
|Choleric||Heleth||Tsundere Action Girl|
|Supine||Samella||empathic Wrench Wench|
|Phlegmatic||Cord||Fiery Redhead Nature Hero|
The core four of Everworld:
The main characters of The Fire-Us Trilogy fit into the ensemble, first in the original four-person arrangement, and later into the five-person setup.
|Sanguine||Angerman||Loud, headstrong, string-the-little-kids-along-in-an-hour|
|Choleric||Hunter||Focused hard worker, taking on most of the physical work|
|Melancholic||Teacher||Devoter of all her time to studying and taking care of the Book, pragmatic with few people skills|
|Supine||Mommy||Hugely loving and devoted to her friends, but unstable and sometimes very weak, psychologically|
|Phlegmatic||Cory||When she later joins the group|
|Tom Buchanan||Nick Carraway||Jordan||Daisy||Jay Gatsby|
The Hannibal Lecter novels: Lecter himself and Clarice Sterling (melancholic), Will Graham (choleric), and Jack Crawford (phlegmatic).
- Nazi looters who eat Lecter's sister:
- The Verger family in Hannibal: Mason (choleric), Molson (melancholic), Margot (phlegmatic).
Harry Potter: the house sortments and the Marauders.
|Ilvermorny Houses||4 Marauders & Wife of One|
|Melancholic||Ravenclaw||Horned Serpent||Remus Lupin|
House sortments and Marauders:
- Harry's cousin, prominent alive-to-the-end Weasley siblings, and other main cast:
|Dudley Dursley||Hermione Granger||Neville Longbottom||George Weasley||Harry Potter|
|Seamus Finnigan||Percy Weasley||Ginny Weasley||Luna Lovegood||Ron Weasley|
- The Main Death Eaters:
|Lord Voldemort & Severus Snape||Draco & Lucius Malfoy||Bellatrix Lestrange||Wormtail aka Peter Pettigrew|
The Hitchhiker's Guide to the Galaxy
The D Squad in The Homework Machine:
|Ezekyle Abaddon||"Little Horus" Aximand||Garviel Loken||Tarik Torgaddon|
|Minerva Mirabal||Dede||Patria||Maria Teresa "Mate" Mirabal|
The four boys in the camp plot of Jelly Belly:
The Borejko sisters in Jezycjada:
Bite Me of the Legends of Laconia series:
|Sanguine||Nat Silver||Bunny Ears Doctor; and 'cause he's a cheerful vampire|
|Phlegmatic||Selene Davidson Anghel|
The 4 March sisters in Little Women:
|Sanguine||Amy||Overdramatic but pleases-without-effort|
|Choleric||Jo||Impulsive, quick-tempered and highly ambitious|
|Melancholic||Beth||Kind and quiet, and to be expected|
|Phlegmatic||Meg||The Kirk and the Team Mom|
The Lords of Discipline
The Maze Runner Trilogy:
The McGurk Mysteries: the original four kids in the McGurk Detective Agency.
|Jack McGurk||Joey Rockaway||Willie Sandowski||Wanda Grieg|
The Monkey Wrench Gang:
On the Road
|Dean Moriarty||Carlo Marx||Marylou||Sal Paradise|
Phantom's Reckoning 2
|Tatsuya & Makoto||Yuki||Kaori||Shoji|
In The Poisonwood Bible, the Price ladies minus Ruth May fit this:
In Red Mars, psychologist Michel Duval slots the classical temperaments into his own psychological theory: Sanguine = Extroverted + Stabile; Choleric = Extroverted + Labile; Phlegmatic = Introverted + Stabile; Melancholic = Introverted + Labile.
The Roman Mysteries: This is actually explictly stated in the books, which is justified because it takes place during a time period when doctors still believed in the four humors.
The Saga of Incredible Weirdness: the later books have the four eldest Marshall brothers (as the second group):
Sammy Keyes and her friends:
A Separate Peace: Gene (phlegmatic), Finny (choleric), Leper (sanguine/supine), and Brinker (melancholic).
The four girls of The Sisterhood of the Traveling Pants:
|Chol-Sanguine||Carmen||the Spicy Latina who snaps easily.|
|Melan-Choleric||Tibby||Snark Knight, according to whom screaming "Screw the world!" is much easier than feeling anything.|
|Sup-ancholic||Lena||Shrinking Violet who's saddened by knowing that people who have lost everything (Kostas and Bridget) are still open to love while she is afraid to let herself love|
|Sang-Supine||Bridget||single-minded the Genki Girl|
Sleepers by Lorenzo Carcaterra: four protagonists and, interestingly, the four abusive guards at the reform school fit this paradigm rather neatly.
The four Compson children in The Sound and the Fury:
- During Starfighters of Adumar, they even get appropriate identifiers; respectively, "the diligent one", "the dour one", "the doleful one", and "the darling one."
Tale of the Troika: not the protagonists, but the Troika.
Done deliberately by Émile Zola as a character study in Thérèse Raquin:
From The Tillerman Family Series: Dicey (choleric), James (phlegmatic), Maybeth (melancholic/supine), and Sammy (sanguine).
The Night Lords of Warhammer40000 are introduced this way. The lineup for First Claw at the beginning Soul Hunter played for the worst of each pair (seemingly) of humors, because to do otherwise wouldn't be Grimdark.
|Chol-Sanguine||Uzas||Emotions are all or nothing; almost universally violent, irritated or sullen when he isn't an unreadable shell. Thinks only of himself, which is how he became corrupt in the first place. He himself admits he all but runs on a slow, seething rage.|
|Melan-Choleric||Xarl||Cynic, chronic complainer, suspicious pessimist, and yet somehow a very capable Lancer for Talos. Throws his whole life into the sword, which shows in every sense of the word.|
|Sup-ancholic||Talos||His romanticism of his Legion's past and the power his prophetic abilities have over his life have left him worn thin all around; known to brood over both. His stubbornness, however, won't let him put anything less than his heart and soul into what he does, and it's nearly killed him before.|
|Sang-Supine||Cyrion||Possibly the most easy-going of the group, and the most vocally distressed at the state of the Legion, although it also means he stands out the least in the shambling wreck of a squad.|
V. C. Andrews' Wildflowers series:
- Her Orphans series also has this, although it's not as pronounced: Janet/Butterfly is definitely phlegmatic, Crystal is probably melancholic, Brooke (who narrates the final book in the series) fits sanguine the best, and Raven is a mix of choleric and melancholic.
In tod Strasser's Wildlife trilogy, boy howdy are the Coming Attractions a textbook example:
|Scarecrow||Cowardly Lion||Nick Chopper/