Stone is a character whose history is shrouded in mystery, given their inability to speak and claims that they "know everything that has, is, and will happen in the universe.” Stone cares for their fellow contestants, trying to warn them when trouble is coming. However, he results to physical action or sign language. He was brought to The Plane by Airy to compete in ONE, a game show, but he comes from his own universe of other stones. He doesn’t have a mouth. He is a sentient stone.