History: Henry Hewitt was chairman and chief stockholder of the Hewitt Corporation, as well as an ally of the subversive 2000 Committee. Hewitt was ruthless, but also very sickly, in a state of almost total paralysis and unable to speak above a whisper. Hewitt kidnapped Lorraine Reilly, the daughter of N.Y. senator Walter Reilly in order to force the senator to cast the decisive vote on a bill that gave the Hewitt Corporation a monopoly on atomic power research. Hewitt then had Multiplex attempt to duplicate the nuclear accident that had given both Firestorm and Multiplex their superhuman powers. Hewitt used Lorraine as a test subject for Multiplex’s experimental nuclear reactor, and the radiation transformed her into Firehawk. Hewitt subjected her to mental conditioning, and sent her to kill Firestorm.

(Fury of Firestorm #18)-Seeing Firehawks’ failure, Hewitt decided to empower himself with the nuclear reactor. He got the power he wanted, and dubbed himself Tokamak, the Human Reactor. He decided to punish Firehawk for her failure, and make her his first victim. Firehawk and Firestorm teamed up to defeat Tokamak, and his containment suit was damaged in the battle. Tokamak’s unstable energy caused a huge explosion and it was only Firestorms’ intervention that prevented a nuclear holocaust. Tokamak was presumably destroyed.