Non is a Kryptonian soldier and an enemy to Superman. He was a brilliant scientist on the Science Council until they lobotomized him for leading a separatist movement. General Zod and Ursa were his closest allies, and they were condemned to the Phantom Zone together as traitors.
Non was created by Mario Puzo, David Newman, Leslie Newman, Robert Benton, and Tom Mankiewicz, first appearing in the film Superman (1978). Richard Donner, its director, later adapted her for the mainstream DC Universe with Geoff Johns and Adam Kubert in Action Comics #845 (2007).