UFC: SUDDEN IMPACT UNLOCKABLES
Maurice Smith
By winning the championship as a heavyweight fighter. You can't do this with a created fighter.
Murilo Bustamante
By winning the championship as a middleweight fighter. You can't do this with a created fighter.
Pete Williams
By winning the championship as a heavyweight fighter five times. You can't do this with a created fighter.
Tsyoshi Kohsaka
By winning the championship as a heavyweight fighter four times. You can't do this with a created fighter.
Legend mode
Win championship mode with any fighter to unlock his legend mode.
Bonus moves
Win champion mode, tournament mode, legend mode, and progress through arcade mode to unlock an additional move for that fighter.