Note: Using these costumes will disqualify you from winning medals or setting records.
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.
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.
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.