It depends on what you define as a villian. In most good fiction, there's not a clear distinction between a hero(or an anti-hero) and a villian. Anyway, I like Entreri from a few a Salvatore's novels; Aoshi from the Kenshin manga and anime; Dr.Doom from Marvel Comics; Riku from the Kingdom Hearts games; Odin from the Bard series; Apollo from Greek mythology(in some of the stories like with Eros or Orion); Kira from Deathnote; Sephiroth from FFVII; from batman, Hugo Strange, Ra's al Ghul, and Shiva; Blade from the Spiderman comics; Guts from Berserk; the main villian from Green Arrow comics; Selene from the Last of the Amazons; Sensui from Yu Yu Hakusho;Dr. Hannibal Lecter; the Saw villian; and quite a few others.

