Because you like Mr. White in Reservoir Dogs
Stewie Griffin is just your average evil-genius, talking, sociopathic baby. See them in Family Guy.
Bedside manner is for chumps, not the brilliant Dr. Gregory House. See them in House M.D..
It doesn't matter how noble or brave he is. Jon Snow is a bastard, and people don't let him forget it. See them in Game of Thrones.
With the ocean breeze behind him and the open seas ahead of him, Jack Dawson feels as if he is king of the world. See them in Titanic.
Make sure not to anger the Hulk or else he will transform into a giant green monstrosity and smash anything in his way. See them in Marvel Cinematic Universe.
Tina Belcher is on the cusp of puberty, and she has no shame when it comes to boys, butts, and brassieres. See them in Bob's Burgers.
Finn is the world's last human who's "all about" understanding right and wrong. See them in Adventure Time.
SpongeBob SquarePants lives in a pineapple under the sea. Absorbent and yellow and porous is he. See them in SpongeBob SquarePants.
She's mostly doom and gloom, but you'd get nowhere without Sadness. See them in Inside Out.
Jack Frost would rather crack a joke or throw a snowball than take anything seriously. See them in Rise of the Guardians.
Puss In Boots is a suave, honorable ladies man/cat who's not above playing cute to get you to let down your guard. See them in Shrek 2.
Ariel knows there's a whole other world above the sea, but exploring it comes at a big price. See them in The Little Mermaid.