Examples:
Patrick Bateman (American Pyscho)
Light Yagami (Death Note)
Sweeney Todd.
Pearl-Pearl.
Daniel Plainview.
Marla Grayson.
Strange Supreme (in his debut episode).
Tom Ripley
Jade Wesker
Walter White
Persephone Rosi
Joe Goldberg
Anakin Skywalker (technically)
What do you think?