Because you like SpongeBob SquarePants in SpongeBob SquarePants
Homer Simpson is a beer-loving disaster in charge of nuclear safety in Springfield. Everybody run! See them in The Simpsons.
Bart Simpson is an aspiring juvenile delinquent who doesn't want you to have a cow, man! See them in The Simpsons.
All the world's a stage, and Missy Piggy's never one to give up the spotlight. See them in The Muppet Movie.
A level-headed show business icon despite his amphibian status, Kermit is the brains behind the success of the Muppets. See them in The Muppet Movie.
If you need her, Lisa Simpson will be in her room with her saxophone and a good book. See them in The Simpsons.
Stewie Griffin is just your average evil-genius, talking, sociopathic baby. See them in Family Guy.
Cosmo Kramer is an eccentric schemer whom you might know better as the "Assman." See them in Seinfeld.
When the going gets tough, Dre Johnson gets tougher. Well, he'd like to think he does. See them in Blackish.
George Costanza is short, stocky, bald, neurotic, and the self-proclaimed "king of the idiots." See them in Seinfeld.
Donkey Kong is a strong, banana-loving, and caring uncle to Diddy Kong. See them in Donkey Kong.
Finn is the world's last human who's "all about" understanding right and wrong. See them in Adventure Time.
If you hang out with Bender in cool dive bars in 31st century New York, make sure you're on his "Do Not Kill" list. See them in Futurama.