Irving is a henchman of Cameron Kaiser and a villain in Batman:The Animated Series.
When Cameron opened his casino the Camelot, he lost lots of money. At the last minute, he redisgned into the Joker's Wild.
Irving was sent by Cameron Kaiser to disguise as a guard of Arkham to break out the Joker. He and his boss Cameron Kaiser planned for the Joker to blow up Kaiser's casino so Cameron can collect the insurance money. Irving caught Batman sneaking around. Batman defeated Irving by throwing smoke pellets at him. Irving was presumably arrested later on due his involvement in Kaiser's plan or at the very least escaped but lost his job as a henchman.
He was voiced by Brion James.