Game Villains

Just did:
Sephiroth (Final Fantasy VII)
Heihachi Mishima (Tekken)
M. Bison (Street Fighter)
Seifer (Final Fantasy VIII)
Edea (Final Fantasy VIII)
Kuja (Final Fantasy IX)
Seymour (Final Fantasy X)
Dr. Wily
Tiesel Bonne
Tron Bonne

Planning:
Ahriman (Prince of Persia)
Albedo (Xenosaga)
Albert Wesker (Resident Evil)
Alesa (Silent Hill)
Alma (F.E.A.R.)
Al Mualim (Assassin's Creed)
Amanda Evert (Tomb Raider)
Baal (Disgaea)
Bon Bonne (Megaman Legend)
Dr. Angus Bumby (Alice Madness Returns)
Bowser (Mario Bros)
Bowser Jr. (Super Mario Sunshine)
Black Shadow (F-Zero)
Cervantes (Soul Calibur)
Cesare Borgia (Assassin's Creed Brotherhood)
Cyberdemon (Doom)
Dark Samus (Metroid Prime 3)
Darth Malak (Star Wars: Knights of the Old Republic)
Darth Vader (Star Wars)
Dizzy (Guilty Gear xx)
Dural (Virtua Fighter)
Dracula (Castlevania)
Dr. Eggman (Sonic)
Ethereal Queen (Star Ocean)
Gabriel Celesta (Star Ocean)
Ganondorf (The Legend of Zelda)
Geese Howard (Fatal Fury)
Goro (Mortal Kombat)
The Joker (Batman Arkham City)
Harley Quinn (Batman Arkham City)
Hazama (Blazblue)
I-No (Guilty Gear xx)
Jack Krauser (Resident Evil)
Jacqueline Natla (Tomb Raider)
Jedah (Darkstalkers)
Kagura (Tenchu 3)
Kefka (Final Fantasy VI)
LeChuck (Monkey Island)
Lezard (Valkyrie Profile)
Liquid Ocelot (Metal Gear Solid 2)
Lynx (Chrono Cross)
Melfice (Grandia 2)
Metal Sonic (Sonic)
Nemesis (Resident Evil)
Nightmare (Soul Calibur)
Onikage (Tenchu)
Pyramid Head (Silent Hill)
Sarah Kerrigan (Starcraft)
Saren Arterius (Mass Effect)
Seth (Street Fighter 4)
Shang Tsung (Mortal Kombat)
Shao Kahn (Mortal Kombat)
Takaya Sasaki (Persona 3)
Teisel Bonne (Megaman Legend)
Testament (Guilty Gear x)
TK (Dead Rising 2)
Tohru Adachi (Persona 4)
Tron Bonne (Megaman Legend)
Vergil (Devil May Cry)
Vyers (Disgaea)
Dr. Wily (Megaman series)
Xehanort (Kingdom Hearts)
Zeus (God of War)