Bear costume
 
 Win all gold medals in the men's events in championship mode. Press 
 L1 or R1 at the character selection screen to access the costume. 
 Note: Using this costume will disqualify you from winning medals 
 or setting records.
 
 Penguin costume
 
 Win all gold medals in the women's events in championship mode. 
 Press L1 or R1 at the character selection screen to access the costume. 
 Note: Using this costume will disqualify you from winning medals 
 or setting records.
 
 Robot costume
 
 Win all gold medals in the men's and women's events in trial mode. 
 Press L1 or R1 at the character selection screen to access the costume. 
 Note: Using this costume will disqualify you from winning medals 
 or setting records.
 
 
 
 Game Shark Codez: 
 
 Master Code (Must Be On):
 0E3C7DF2 1853E59E
 EE8A6206 BCBBF8CA
 
 Unlock All Characters:
 DE7D424A BBA89A82
 
 Have 99 All Trial Medals:
 BE7D6866 BCBD9BE9
 935B935B BCA99B83
 BE7D6862 BCBD9BE9
 935B935B BCA99B83
 Note: Do not save the game when these codes are active.

Enter codes before the start of an event: 

Big heads in K120: L1, R1, L1, R1, L1, L1, R1, L1 
Big heads in K90: R1, L1, R1, L1, R1, R1, L1, R1 
Big heads in Mogul: UP, UP, DOWN, DOWN, LEFT, RIGHT, LEFT, RIGHT, L1, R1