Stone is a supervillain. He is a member of the criminal group known as the Hand.He was the favoured pupil of Stick, the blind former mentor of Elektra Natchios. He is a highly trained martial artist. Like the other members of the Hand, Stone is deeply advanced in the art of chi-manipulation. An offshoot of this is his ability to render himself invulnerable to physical harm - but only if he sees it coming.He is an enemy of Elektra.