Created by Mike Sekowsky and Gardner Fox, The Royal Flush Gang is a group of usually incompetent supervillains based on a suit of cards.

The Original Gang

Created by Professor Amos Fortune, him and a group of five villains (Ace, King, Queen, Jack, and Ten) used the Professor's luck-altering technology and had costumes resembling the suit of clubs. Fortune left the Gang, and they attempted to go on without him, but were stopped by the Joker's manipulations. Later, while batteling The Justice League and their successors, the second Royal Flush Gang, the original Gang was killed.

The Second Gang

Started by Hector Hammond, the second Gang was the only one with full identities for nearly everyone. He changed the suit to spades and recruited new members:

*Ace (real name Derek Reston) was an android with super-strength in the form of a man.

*King (real name Joe Carny) became immortal due to the metagene bomb and had the power of mind control.

*Queen (real name Mona Taylor) could create realistic illusions and had a wrist shooter that fired spades.

*Jack (real name unknown) had one real eye and one eye which was a laser weapon. He also had an energy-charged sword.

*Ten (real name Wanda Wayland) had energy blasters in her gloves and carried explosive playing cards.

Third Gang

In Superman: The Man of Steel, the Royal Flush Gang had expanded all across Americs. Insead of only five members, each group had fifty-two, and four suits.

Infinite Crisis Gang

The Joker, after being rejected from society, kills all fifty-two members of a Gang in a casino.

The Gang in The Justice League

In the animated TV series The Justice League, there is an episode ("Wild Cards") where in exchange for five super-powered kids' freedom from Government facilitating, the kids would become The Joker's Royal Flush Gang. Ten had invulnerability and super strength, Jack had an elastic body, Queen could manipulate metal, King could blast fire, and Ace, the most powerful, could create illusions and drive people insane just by looking at them.

The Gang in Batman Beyond
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The gang in this series was a family of thieves.