Big Boss vs. The Boss
UPDATE
Alucard vs. Dracula
Amaterasu vs. Orochi
Arthas vs. Illidan
*B.J. Blazkowicz vs. Adolf - whipper
*Banjo vs. Gruntilda - todbot
*Big Boss vs. The Boss - Scorp
Captain Falcon vs. Shadow
Cecil vs. Golbez
Chell vs. GlaDOS
*Chris Redfield vs. Wesker - fpce
Cloud vs. Sephiroth
*Conker vs. Great Mighty Poo - darkx
*Dan vs. Sagat - 7Deuce
Donkey Kong vs. King K. Rool
Ezio vs. Rodrigo
*Fox McCloud vs. Wolf O'Donnell - Great_Paul
Frog vs. Magus
*Ike vs. Black Knight - Suor
Katherine vs. Catherine
Kirby vs. Meta Knight
*Layton vs. Don Paolo - JONALEON
Link vs. Ganondorf
*Mario vs. Bowser - Wilhuff
Mega Man vs. Dr. Wily
Ness vs. Giygas
*Pac-Man vs. Blinky - kenrmcha
*Pokemon Trainer Red vs. Blue - 521
Raiden vs. Vamp
*Ramza vs. Delita - Evillord
Samus vs. Ridley
*Shepard vs. Saren - malyg
Sol Badguy vs. Ky Kiske
*Solid Snake vs. Liquid Snake - FlyingMetalGear
*Sora vs. Riku - Genesis
*Squall vs. Seifer - Genesis
*Sub-Zero vs. Scorpion - Wilhuff
*Terra vs. Kefka - mnkboy
Tom Nook vs. Crazy Redd
X vs. Zero
*Yuna vs. Seymour - vcharon