Goomboss

Goomboss is the boss of the Goomboss Battle level, and being defeated unlocks Mario. They are a large version of Goomba, and first appeared in the original Paper Mario.

Fight
After reaching the end of the Goomboss Battle level, the player will end up at a large tree tunk surrounded by a void, with poisonous gas, making the arena a ring. Goomboss will appear with an army of Goombas behind them. Goomboss attacks by walking towards the player and does damage on contact. The player must use Yoshi to eat a Goomba and throw it at Goomboss to do daage. Goomboss will then grow bigger, walk faster, and more Goombas will appear. This must be done 3 times in total to defeat Goomboss and unlock Mario.