Mountain Man is a living mountain who appears in Adventure Time. Being a stationary mountain, he is unable to look away. He seems very fragile and caring of both people's and animal's health and well-being. He cries boulders out of his eyes, often causing avalanches.
In the game
He was seen in the game, next to a lumpy warrior. He cried boulders when Finn threw him to his eyes an onion.
- He was seen equal as in the cartoon.