Death

He enjoys climbing the mountains all by himself, therefore he will remove everyone in his path. He does not care for material possessions except his compass, rope and pickaxe. Try removing any of these from him, if you were able to get close enough, and you would find yourself in a new type of Hell.

Sometimes he spends a few months with the clan. In those month, he does nothing but gather information about mountains he has never visited before.

He is not a picky eater, because he needs to eat a lot to maintain his weight. If food is scarce and he sees a dragon wandering alone on the mountain, he will swiftly kill the poor dragon with his pickaxe, and then eat it.

Everyone knows about his cannibalistic behavior and lack of empathy, yet there's nothing they can do. Challenging him while he's in the clan does no good - he will simply run away. He's at home in the mountains, but he's a coward in the clan.