Hush (Dr. Thomas "Tommy" Elliot) Mask

Hush is the childhood best friend of Bruce Wayne, who has grown up to become one of Batman's greatest enemies. In his civilian identity, he is a brilliant and wealthy neurosurgeon named Thomas Elliot. His devious and manipulative tactics make him an extremely formidable opponent. Elliot attempted to murder his parents at a young age and blames Thomas Wayne for ruining his life by saving his mother. He seeks revenge by destroying Bruce's life on every level and will not allow any other villain to kill his nemesis, although he frequently utilizes other members of Batman's rogues gallery in his elaborate schemes. Tommy uses dual handguns as his signature weapons and has a penchant for quoting the philosopher Aristotle.