Ghost (Donkey Kong 64)
From the Super Mario Wiki
Ghosts are found only Donkey Kong 64, and are quite rare. They are found only in the area Creepy Castle and do not often reappear (some do so only if a player leaves the area and re-enters). They attack the Kongs by simply running into them. A Ghost can be defeated by any means.
Sometimes, a Ghost will appear to harass the Kongs in their battle against the Creepy Castle boss King Kut Out, but they can also provide them with extra health mid-battle.
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