7. Firefly
Origin: Garfield Lynns was originally a pyrotechnic expert who used to commit petty crimes. He was a pyromaniac, however and soon began to use dangerous pyrotechnic equipment such as flamethrowers and grenades in his thefts. During one of his robberies, he set fire to a chemical factory that raged out of control and scarred him heavily. Therefore he built his fireproof suit to protect himself, continuing his fire related crimes as Firefly.
Abilities: Expert in pyrotechnics and explosives
First Appearance: Firefly first appeared in Detective Comics #184. After committing his first crime, Batman and Robin easily apprehended him. Yeah, I know, right? He later took up arson as a hobby and built his specialized Firefly suit. In fact, he became so infatuated with fire that he believed he could see visions in the flames.