Dr. Rory Campbell was a psychologist whose history has by and large yet to be revealed, although he had known the mutant researcher Moira MacTaggart in the past. Recently, Campbell accepted a position as Moira's assistant at Muir Island, at the same time that the mutant hero team Excalibur was stationed there. It was here that he discovered the existence of an alternate reality in which he became the mutant hunting Ahab, creating and leading hordes of mutant trackers called "Hounds." Campbell became determined to prevent that future from ever happening.
Excalibur had captured the villain Spoor, an Acolyte of Magneto, and Campbell built a special room to perform therapy on Spoor, who had the power to control another's mood. The room had built-in lasers to react to any hostile behavior and Campbell used tranquilizers while talking to Spoor so as to inhibit his mutant power. Nevertheless, Spoor eventually provoked Campbell into attacking him. As a result, the room's weapons fired at the scientist, costing him a leg.
Campbell began to see his perceived "destiny" of becoming Ahab occurring. With the dissolution of Excalibur, Campbell traded secrets of the deadly Legacy Virus to Sebastian Shaw of the Hellfire Club, claiming that he hoped that Shaw's greater resources would find a cure, but actually receiving a state-of-the-art prosthetic leg in the bargain.
Under unrevealed circumstances, Campbell was captured by the villain Apocalypse and transformed into the Horseman called Famine. In this capacity, he fought the X-Men but managed to escape before Apocalypse was defeated.