History
The early history of the Man-Thing of mirrors that of his Earth-616 counterpart.
Scientist Ted Sallis attempted to recreate the super-soldier serum that had empowered Captain America. Sallis tested the formula on himself, but rather than becoming a super-soldier like Captain America, he was transformed into a plant/human hybrid which was drawn to fear. [1]
When Psycho-Man's Emotocaster was being used to drive the entire Microverse insane, the Man-Thing was drawn to HEL Laboratories. There, the Man-Thing would block the portal to the Microverse with his own body, his tendrils igniting upon contact with the mad world below. He would sacrifice his life in order to prevent the Microverse's madness from spreading to the Earth. The sole survivors of the destruction of the Microverse were the Ant Men. [1]
After his death, Ted came to reside in the Realm of the Dead, now finally the super-soldier he had always wished to become. He fought alongside Mar-Vell in his war against Death itself. [1]