I've probably forgotten a load of matches

Dante - 51%
Amaterasu - 19%
Ada Wong - 19%
Balthier Bunansa - 11%

Pikachu - 26%
Tidus - 20%
Leon Kennedy - 37%
Vivi - 17%

Kirby - 35%
L-Block - 21%
Kratos (God of War) - 28%
Donkey Kong - 16%

Solid Snake - 55%
Nightmare - 17%
Ryu Hayabusa - 18%
Riku - 20%

Squall Leonhart - 32%
Aeris Gainsborough - 26%
Sora - 29%
Lara Croft - 13%

Duke Nukem - 20%
Gordon Freeman - 18%
Sonic the Hedgehog - 38%
Sub-Zero - 24%

Mega Man - 33%
Yoshi - 18%
Samus Aran - 35%
Scorpion - 14%

Cloud Strife - 51%
Marcus Fenix - 9%
Auron - 20%
Ryu (Street Fighter) - 20%

Sephiroth - 39%
Fox McCloud - 10%
Mario - 36%
Big Boss - 15%

Link - 42%
Vincent Valentine - 20%
Crono - 23%
Zero - 15%

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Jon Thomson - 139/200, next picks: Yuna beats MC
Bracket analysis: http://boards.gamefaqs.com/gfaqs/genmessage.php?board=8&topic=37520975