Big heads in K120 event
Just press L1, R1, L1, R1, L1(2x's), R1, L1 prior to the K120 event starting.

Big heads in K90 event
Just press R1, L1, R1, L1, R1(2x's), L1, R1 prior to the K90 event starting.

Big heads in Mogul event
Just press Up(2x's), Down(2x's), Left, Right, Left, Right, L1, R1 prior to the Mogul event starting.

Penguin costume
Win every gold medal in the women's events in championship mode. Then press L1 or R1 while at the character selection screen to access the costume. Note: Using this costume will disqualify you from winning medals or setting records.

Bear costume
Win every gold medal in the men's events in championship mode. Then press L1 or R1 while 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 every gold medal in the men's and women's events in trial mode. Then press L1 or R1 while at the character selection screen to access the costume. Note: Using this costume will disqualify you from winning medals or setting records.