What DC Comic book did the Joker originally appear in 1940?
The Joker (comic book) The Joker is a comic book series published by DC Comics starring the super-villain the Joker. It ran nine issues from May 1975 until October 1976.
Rex Leech Rex Leech is a fictional character in the DC Comics Universe. He first appeared in "Adventures of Superman" #502 in July 1993 and for a time was a regular supporting character in the Superboy line of comics.