Clarice
Complete all 10 Gawoo attack stages and the final stage in challenge mode.

Bluebee
Complete all 10 combo stages and the final stage in challenge mode.

Grandma B
Complete the normal ramps.

Aimee
Complete the bowl ramp in ramp mode.

King Gawoo
Complete street mode under the normal difficulty setting, then defeat King Gawoo in street mode (flip side) under the normal difficulty setting.

Mr. Honda
Complete all 10 trick stages and the final stage in challenge mode.