The original version, Jean-Paul Valley, was created by Denny O'Neil, Joe Quesada, and Peter Milligan, and debuted in Batman: Sword of Azrael #1 (October 1992).
Additionally, an original iteration, Theo Galavan, appears in the second season of Gotham, portrayed by James Frain.
[1][2] He later briefly assumed the identity of Batman in the "Knightfall" story arc (1993-1994), after Bruce Wayne was severely injured in a fight with Bane.
[8] He is a billionaire industrialist, heir apparent of the Order of St. Dumas, brother of Tabitha Galavan, uncle of Silver St.
After being exposed and killed by Oswald Cobblepot and Jim Gordon, Theo is later revived by Hugo Strange, but is rendered insane and amnesiac.