The General of the Gravel Stone, whose real name is Geh Olg, is the Sage of Earth. He is a man with long brown hair wearing desert clothing.
He is corrupted by the Diva of the Twilight and forced to battle Isaac. After discovering that Twisted Wand Castle is barred off, Isaac battles the General of the Gravel Stone again, this time rewarding him with the Lost Magic of Earth.
The General of the Gravel Stone, like the other Sages, does not give his real name. His real name can be discovered by selecting him in a multiplayer battle.