Petey Piranha

Petey Piranha is the major alternative boss of Tiny-Huge Island. It takes the form of it's Super Mario Sunshine appearance. It usually attacks by shooting fireballs, and is defeated by punching it's belly button.

Tiny-Huge Island
Works as listed above. Usually appears on top of the island.

Distant Islands
Works as listed above. This alternative boss fight is not considered canon.