"Mountain" is an ancient true dragon who had trained himself to be the apex of hand-to-hand combat. He's unfortunate to be one of the rare few dragons to be inert — meaning that he has no affinity to elements — unlike other true dragons. However, just as he is unable to use elemental affinity, no element can pierce through his scales, among other things. He is one of, if not THE most physically powerful individuals in the world, as well as the most mentally powerful. He only ever shows stoicism.