| Derek Mitchell was a Gotham City police officer, who gave in to the city’s pervasive corruption,. Unlike many of his fellow officers, Derek Mitchell’s involvement was discovered, leading to his arrest and imprisonment. Mitchell escaped from Blackgate Penitentiary and sought revenge against Mortimer Kadaver, the killer who’d set him up for arrest. Eluding the police seeking him, he was down at the Gotham docks when a bolt of lightning struck. The ensuing explosion of a building douse him in a unique blend of chemicals and hazardous waste. This apparently activated Mitchell’s meta-gene and altered his body to emit a highly corrosive acid. |
