Because you like Vito Corleone in The Godfather
Claire Underwood is scary intimidating, and she knows it. See them in House of Cards.
V is a violent anarchist with literally nothing left to lose. But, he might have a point. See them in V for Vendetta.
Charismatic, sociopathic, and dramatic, Charlie Bronson wants nothing more than to be famous. See them in Bronson.
World domination and Superman's demise are next on Lex Luthor's to-do list. See them in DC Extended Universe.
Alex DeLarge likes his favorite milk-based, drug-laced cocktail. It helps him get in the mood for a night of "ultra violence." See them in A Clockwork Orange.
This lab mouse has one thing on his huge brain: trying to take over the world on a nightly basis. See them in Pinky and the Brain.
Born and raised in the darkness, Bane is determined to have the city totally under his control so that he can demolish it. See them in DC Extended Universe.
It turns out Dracula's son Alucard has some pretty severe daddy issues. See them in Castlevania.
Driven by guilt and rage, Kratos is less a man and more an unstoppable avatar of anger and hate. See them in God of War.
Free-spirited Annie Hall goes through life saying "La-di-da, la-di-da, la la." See them in Annie Hall.
Stuck somewhere between life and death, Talion is motivated by one thing only: vengeance. See them in Middle-earth: Shadow of Mordor.