Because you like Sid in Ice Age
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.
Chef is a swinging bachelor and former R&B singer with a leopard-skin upholstered couch and some great stories. See them in South Park.
The best part of Yelena Belova's life was fake and no one told her. See them in Marvel Cinematic Universe.
Waylon Smithers would do anything for his boss, and would love to do a few things *to* him. See them in The Simpsons.
Victor Frankenstein can create life, so he's pretty awesome if he says so himself. See them in Frankenstein.
Emma Frost's superpower: transforming her body into an unbreakable diamond. See them in X-Men Series.
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.
Boomerang is equally skilled at tossing boomerangs and tossing back beers. See them in DC Extended Universe.
Though she has the normal insecurities of a 15-year-old, Aurora is both courageous and empathetic. See them in Maleficent.
Angela Martin is uptight and puritanical, outside of the affair she's having with a co-worker. See them in The Office.