Big Bully

Big Bullies are mini-bosses found in Lethal Lava Land. They are bigger versions of regular Bullies, and act the same, attempting to knock the player into lava. When knocked into lava, Big Bullies drop stars. There are 2 Big Bullies in Lethal Lava Land. One is spawned by defeating 3 regular Bullies, and the other is immediately in the course. It has a variant known as the Chill Bully.

Unused Hitbox
Found in the files of Super Mario 64 is a bigger hitbox for the Big Bully that is never used. It has been dubbed the "Fat Bully" when the hitbox is used by the Personalization A.I.

Otos
Found in the files of Super Mario 64 is an unused version of the Big Bully with 1 horn instead of 2, making it look more similar to the Chill Bully.