Because you like Gomez Addams in The Addams Family

Peter Venkman's "research" projects are designed to get undergraduate students to sleep with him. Though it turns out he can bust ghosts. See them in Ghostbusters.

A karate master/rocket scientist/squirrel, Sandy Cheeks is the only one who can clean up the other resident's messes in Bikini Bottom. See them in SpongeBob SquarePants.

Milo Thatch is an enthusiastic researcher without cynicism. See them in Atlantis: The Lost Empire.

James Gordon happens to be the one guy in Gotham City with proper morals who doesn't also run around in a cape. See them in DC Extended Universe.

A stylish agent, Agent J would rather improvise than play by the rules. See them in Men in Black.

Mother Gothel is a great mother as long as you never, ever, break the rules. See them in Tangled.

Baloo is a fun-lovin' bear who just needs the bare necessities of life See them in The Jungle Book.

Ursula will oh-so-generously grant your wishes for a price. See them in The Little Mermaid.

Green skin, pointy hat, evil cackle—this villain has it all! See them in The Wizard of Oz.