Unlock Mask:
Use arcade mode and win 20 consecutive matches.

Unlock Femme Fatale:
Use arcade mode and win 8 consecutive matches.

Unlock Bruce Buffer:
Win UFC using ALL characters.

Unlock John McCarthy:
Use Bruce Buffer to win UFC Mode.

Unlock Mario Yamasaki:
Use John McCarthy to win UFC Mode.

Unlock Ice-T:
Use arcade mode and win 10 consecutive matches.

Unlock The Cat:
Use arcade mode and win 4 consecutive matches.