Because you like The Wicked Witch of the West in The Wizard of Oz

With a unique ability to empathize with killers, Will Graham helps society but his sanity pays the price. See them in Hannibal.

NiGHTS is a powerful but childlike spirit who hates being told what to do. See them in NiGHTS into Dreams.

For the sake of science, Kurisu Makise will persevere no matter how deep into the dark secrets of the world she finds herself. See them in Steins;Gate.

Armin Arlert was wrong. This world hasn't become hell; it's been hell. He just couldn't see it before. See them in Attack on Titan.

A benevolent madman with a blue box, The Doctor is traveling through time and space to heal the wounds of the universe. See them in Doctor Who.

Clary Fray's philosophy: dive into the supernatural underworld first and ask questions later. See them in City of Bones.

He may be one of the Four Horsemen of the Apocalypse, but War still maintains a strong sense of honor. See them in Darksiders Series.

Aiden Pearce is a hacker who knows how dangerous the world can be, both online and off. See them in Watch Dogs.

Mike Ehrmantraut is rutheless, merciless, and probably the most endearing hitman you've ever met. See them in Breaking Bad.

Kendall Roy is a wanna be ruthless businessman who comes across more like an anxious teenager. See them in Succession.

Tobias "Four" Eaton is only afraid of four things, but you should probably be afraid of him. See them in Divergent.