Criminal
Doctor and Surgeon
Philadelphia, Pennsylvania
Exceptional hand-to-hand combatant and marksman.
Genius level intelligence with aptitudes in multiple medical sciences.
Excellent tactician skilled in criminal planning.
Dr. Thomas Elliot
Batman #610 (Feb. 2003)
Hush
Batman #619 (Nov. 2003)
Years later Edward Nigma, better known as the Riddler, sought help curing his cancer from Dr. Elliot, who was now practicing medicine in Philadelphia. Unable to find a cure through conventional means, the Riddler sought out and used a Lazarus Pit, which he learned were used by Rās al Ghūl to prolong his life and cure his wounds. During the healing process Riddler had an apparent moment of clarity and he discovered that only Bruce Wayne could be the Batman.
Returning to the United States, Riddler offered the cure for cancer to Dr. Elliot, whose mother was suffering from the disease as well. Obviously Dr. Elliot did care to cure a woman he attempted to kill years before. Apparently in conversation he conveyed his hatred of the Waynes to the Riddler, who knowing Bruce Wayne is Batman offered Elliot a plan for vengeance that would benefit them both.
Recruiting both enemies and allies of the Batman through either rewards and or deceit, Dr. Elliot and the Riddler executed a plan of vengeance to once and all destroy Batman both body and soul, keeping the Dark Knight constantly guessing who was the enigmatic Hush.