The Mad Hatter of Gotham City The Mad Hatter has a superb collection of stolen hats, but with Batman's cowl missing it is incomplete. The Dynamic Duo must then thwart a number of schemes designed to part the Masked Manhunter from his cowl. The Human Firefly When theatrical lighting director Garfield Lynns is prevented from staging his first robbery, he makes his escape thanks to the light given off by a firefly. Inspired, he assumes the identity of the costumed criminal, Firefly. The Mental Giant of Gotham City! A freak accident gives police janitor Barney Barrow a super-advanced brain, he then blackmails the Dynamic Duo into aiding him with his ever more dangerous methods of crime-fighting. The Joker's Aces! The Clown Prince of Crime recruits some new members for his gang, all of whom are perfectly suited for specific felonies. The Gorilla Boss of Gotham City! Executed criminal George 'Boss' Dyke's brain is transplanted into a gorilla's head, after amassing a fortune from his crimes, his next plan is even more bizarre. He intends to transplant his brain again, but this time into Batman's head! The New Crimes of Two-Face! Actor Paul Sloane is disfigured in an accident, this unhinges his mind and causes him to turn to crime as the second Two-Face. The Mysterious Mirror-Man! Ventris, a convict, escapes jail with the help of a broken mirror. He adopts the identity of the Mirror Man and sets out to uncover Batman's secret identity by using his X-Ray Mirror. Data courtesy of the Grand Comics Database