The Con Cheats 

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KFJ:
By beating KFJ (Team Rogue) in Class B Story mode you will unlock him.
User Cheat by k9

Boneyard:
Defeat Boneyard (Team Phantom) in Class D Story mode to unlock him in arcade mode.

Cinder:
By beating Cinder and her team in Class A Story mode you will unlock her in arcade mode.

Hardcase:
Finish arcade mode to unlock him in quick play mode.

Mask (Jeet Kune Do):
Complete arcade mode under hard difficulty with a Jeet Kune Do fighter to unlock him in quick play mode.

Mask (Kickboxing):
Complete arcade mode under hard difficulty with a Kickboxer to unlock him in quick play mode.

Mask (Street Boxing):
Complete arcade mode under hard difficulty with a Street Boxer to unlock him in quick play mode.

Mask (Tae Kwon Do):
Complete arcade mode under hard difficulty with a Tae Kwon Do fighter to unlock him in quick play mode.

Mask (Wrestling):
Complete arcade mode under hard difficulty with a Wrestler to unlock him in quick play mode.

Reina:
Finish story mode.

Shaman:
By beating Shaman and his team in Class B you will unlock him in arcade mode.

Smoke:
By beating Smoke and his team in Class C you will unlock him in arcade mode.

Bonus quick play mode characters:
After unlocking a character for quick play mode. Highlight the "Random" option at the character selection screen and press Circle until that character appears.

Bonus items:
Defeat Cinder's (Class A), Shaman's (Class B), Smoke's (Class C), and Bonyard's (Class D) teams to unlock items used by the corresponding team leader.

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