Heave-Ho

Heave Hos are red mechanical enemies in Super Mario 64 and Super Mario 64 DS. Heave Ho's name is a direct reference to the phrase "Heave Ho!", which people would say when trying to move something. They appear in Tick Tock Clock and Wet-Dry World. Their faces resemble those of an Amp. Heave Hos can not be destroyed.

They ride on three wheels, and have a dustpan-like mechanism with footprints on it, which they use to fling Mario upwards. On the Heave Hos' sides are emblems of Bowser giving a thumbs up, which is over the word "KOOPA" written around in fire. After moving around their area, they lose power, and they have to wind up the key-like object in their backs, much like a toy.

Heave Hos can help Mario by flinging him upwards depending on the direction they are facing to help him reach higher areas. More often than not, however, they are a hinderance, as the height at which they toss Mario is such that he will take fall damage upon landing (unless he lands on a higher area); this is especially dangerous if he is thrown into a lower level. Heave Hos cause the greatest problems in Tick Tock Clock, where it is likely that Mario will be thrown into the center abyss and lose a life.

In Super Mario 64 DS, Heave Hos underwent multiple visual changes, having eyes inside visors instead of a face. The "KOOPA" emblem is gone from their texture. Besides appearing in the aforementioned worlds, they also appear in the Battle Fort stage.

Trivia

 * It is possible to obtain the "Get a Hand" star in Tick Tock Clock by stepping on a Heave Ho at an angle where it directly flings the character into the star.
 * The Cataquack, an enemy appearing in Super Mario Sunshine and later games, behaves similarly to Heave Ho. Both enemies use flat surfaces protruding from their bodies to launch Mario high into the air.