In combat with Luke Cage, Chemistro accidentally fired his alchemy gun at his own right foot, turning it to steel, though the unstable nature of the transmutation soon caused it to crumble to dust, leaving him crippled. Carr was turned over to the police, and in prison was beaten by his cellmate Arch Morton into revealing the means by which the alchemy gun worked. Morton took on the Chemistro persona, and Carr invented a "nullifier" device which enabled Cage to defeat Morton.