Mario vs. Bowser
UPDATE
Alucard vs. Dracula
Amaterasu vs. Orochi
*Arthas vs. Illidan - malyg
*B.J. Blazkowicz vs. Adolf - whipper
Captain Falcon vs. Shadow
*Chell vs. GlaDOS - Scorp
*Chris Redfield vs. Wesker - fpce
*Donkey Kong vs. King K. Rool - 521
Frog vs. Magus
*Kirby vs. Meta Knight - WhiteLens
*Mega Man vs. Dr. Wily - Wilhuff
*Pac-Man vs. Blinky - kenrmcha
*Raiden vs. Vamp - Scorp
*Samus vs. Ridley - Suor
*Terra vs. Kefka - mnkboy
X vs. Zero