The Gray One was the leader of the Riverhead tribe of watervoles. Although he seemed friendly, he was prone to be devious and tricky, and was something of a bully. Burble claimed the Riverheads had once been led by a council, but Gray One had unofficially proclaimed himself head of council, and then done away with the council altogether to become the sole ruler. One of the greatest ambitions in his life was to gain the Leafwood, to solidify his usurped position as chieftain.