Because you like Mr. Fox in Fantastic Mr. Fox
A born psychopath, don't expect Michael Myers to understand the difference between right and wrong. See them in Halloween.
A jazz musician, Sebastian Wilder is passionate about his music and his life. See them in La La Land.
Aslan represents everything good and just, he's just not super reliable. See them in The Chronicles of Narnia.
Ultron is security software turned evil mastermind. See them in Marvel Cinematic Universe.
Mother Gothel is a great mother as long as you never, ever, break the rules. See them in Tangled.
Thanos is an intergalactic warlord, on the hunt for infinite power. See them in Marvel Cinematic Universe.
Count Olaf is a traveling actor, except he can't act and his homicidal tendencies make finding work pretty difficult. See them in Lemony Snicket's A Series of Unfortunate Events.
For Celty Sturluson, it's rather upsetting to be the only headless girl in a city filled with full-bodied humans. See them in Durarara!!.
Anger is a cantankerous hothead whose job is to get others riled up. See them in Inside Out.
Shuri is a genius-level inventor with a wicked sense of humor. See them in Marvel Cinematic Universe.