Royal Flush Gang

The Royal Flush Gang is a group of supervillains appearing in American comic books published by DC Comics. The group, which debuted in Justice League of America #43 (March 1966), use a playing card theme. Their code names are based on the cards needed to form a royal flush in poker: Ace, King, Queen, Jack, and Ten. Joker occasionally affiliates himself with the gang, but is not a consistent member.