In the post- Crisis On Infinite Earths continuity, Lex Luthor cloned Superman more than once. While his most successful venture combined his own DNA with Superman’s to create Conner Kent, the first attempt was a failure. In The Man of Steel limited series, Lex Luthor created a clone of Superman that crystallized over time.

Artist Matthew Eberle, who served as the on-set lead of the visual effects for the DCU feature Superman, offered details of a gruesome scene that was ultimately left out of the theatrical version of the movie.