Professor Ernst Sinclair was the former quartermaster of the Action Man Programme and an unhealthy eater.
When Doctor X mutated 1500 college students, Sinclair was able to figure out a way to revert them to their normal selves.
Professor Sinclair recruited Bryce Chan from the University of Nottingham into the Action Man Programme's tech division. To the annoyance of everyone else in the division, Chan eventually became Sinclair's prodigy. A few years later, Sinclair died of a heart attack resulting from his steady diet of red meat and bitters. With him gone, A.M.P. director Pauline Bestley saw fit to promote Bryce Chan to fill Sinclair's empty position.