In Batman #186 in 1966 by Gardener Fox and Sheldon Moldoff, at a time when the comic book reflected the Batman TV show, The Joker gathered a group of criminals and his very own sidekick, a diminutive clown named Gaggy who Joker sees as his own Robin, to commit a series of heists stealing an original or first edition items of antiquated or historical value.

Gaggy tried to unmask Robin and fails, eventually jailed with the Joker.

Gotham City Sirens, at the end of 2009, gave him his only multi-part story. In Gotham City Sirens #4, Gaggy is in disguise as The Joker, as the Joker attempts to deal with Harley Quinn's new relationship with Bruce Wayne.