Bully

Bullies are enemies in Super Mario 64, appearing in Lethal Lava Land and Bowser in the Fire Sea. They are black spheres with eyes, yellow horns and green feet. They are defeated by being knocked into lava. There is a boss variant called a Big Bully, and a Chill Bully variant.

Unused Kick Animation
There is an unused animation of a Bully kicking. Kicking Bullies are the easiest way to fight Bullies, so it is possible they could fight back.