Heave-Hos are mechanical wind-up toys and enemies in Super Mario 64 and its remake, Super Mario 64 DS. They appear in Tick Tock Clock and Wet-Dry World, and in the remake, they are also in the Battle Fort stage. Heave-Hos cannot be destroyed.
Heave-Hos patrol certain areas, using a wind-up key to move around. Heave-Hos make the sound of a working machine as they move, similar to Chuckya. After a while, a Heave-Ho loses power, and it winds itself back up to continue moving around. If a character stands on a Heave-Ho's platform, it flings them high up from behind. The direction that the character is flung in depends on which direction the Heave-Ho is facing. This is sometimes required to reach certain higher areas. This can sometimes result in the character being flung too high, causing them to lose health when they land. In Tick Tock Clock, this may also result in the character falling down a pit.
In Wet-Dry World, Heave-Hos disappear if the water level rises above the platforms that they are on. If the water is drained to a lower level, the Heave-Hos come back.
In some cases, a Heave-Ho can help the character reach a Star, such as in Tick Tock Clock's "Get a Hand" mission, where if the character steps on a certain Heave-Ho as it faces a certain direction, it flings the character directly up to the Star.
Heave-Hos' bodies are a dark red color, and they have a yellow wind-up key on their back. They ride on three wheels and have a dustpan-like mechanism with footprints on it. The sides of Heave-Hos have an emblem of Bowser giving a thumbs up, above the word "KOOPA" written around in fire. The word "KOOPA" was left unchanged for international releases. In Super Mario 64 DS, Heave-Hos have undergone multiple visual changes, having eyes inside visors instead of a face and lacking the side decal.
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