Heave-Ho

Heave-Hos are robotic enemies. They are red robots with red arms and grey cylinders connected their arms to their body. They are holding a panel that will be shot upwards when stepped on, effectively flinging the player. There is also a wind-up key on it's back. There is also a Bowser icon on the robot. It has a smug face. It can be used to reach high places. They patrol a certain area and run towards the player when spotted. They occasionally stop moving entirely.

Unused Wheels
There are unused sphere models found in the files of Super Mario 64 referenced to appear on Heave-Hos, believed to be wheels. The full game uses 2D tires.

Heave-Ho Grabbing
If a Heave-Ho gets close enough to the water while the player is on the surface of the water, it will be able to be grabbed. This is because grabbing objects in that state does not check for the ungrabbable classification of objects.