Frank Payne was an agent of S.H.I.E.L.D. who covertly operated as the criminal the Constrictor until he was put into a coma by Steve Rogers when he and several other heroes were breaking up a weapons auction Constrictor was running. When Payne awoke from the coma, he escaped from the hospital. His current whereabouts are unknown, but S.H.I.E.L.D. has dispatched Captain America to search for him.