Because you like The Wicked Witch of the West in The Wizard of Oz
Mother Gothel is a great mother as long as you never, ever, break the rules. See them in Tangled.
Ursula will oh-so-generously grant your wishes for a price. See them in The Little Mermaid.
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.
White Witch's heart is as frozen as the land she rules. See them in The Chronicles of Narnia.
Baloo is a fun-lovin' bear who just needs the bare necessities of life See them in The Jungle Book.
A no-nonsense pro, Agent K has dedicated his whole life to his job. See them in Men in Black.
Blunt but anxious, Gretchen Ross bonds most easily with those who have lived tough lives like she has. See them in Donnie Darko.
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.
Emma Frost's superpower: transforming her body into an unbreakable diamond. See them in X-Men Series.