Because you like Drusilla in Buffy the Vampire Slayer
World domination and Superman's demise are next on Lex Luthor's to-do list. See them in DC Extended Universe.
This beautiful aesthete wins the hearts of both ladies and men. But Dorian Gray also happens to have his soul sealed in a painting. See them in Dorian Gray.
Holden Caulfield is convinced that the whole adult world is full of phonies. See them in The Catcher in the Rye.
Mikey Waters would rather sell his body than rob anybody. See them in My Own Private Idaho.
Fox Mulder is a devoted believer in aliens, monsters, and that the truth is out there. See them in The X-Files.
Told her son will one day save the world, Sarah Connor dedicates her life to training him to do just that. See them in The Terminator.
Konata Izumi has a live-now, worry-later view of the world. See them in Lucky Star.
This metal-bending mutant may be misaligned with the genetically normal people of the world, but Magneto's got class for days. See them in X-Men Series.
V is a violent anarchist with literally nothing left to lose. But, he might have a point. See them in V for Vendetta.