Andrew Hamish Graves' mutation was already visible at a young age. His father was abusive and blamed the child's mother for birthing a mutant. He killed his wife and told the child that his mother had left them. His father forced the child to eat garbage and when he grew up, he developed an intense hatred of both himself and all humans. He discovered his mutant power to release mood-altering pheromones, allowing him to control others and used these powers to have people kill each other.
Taking the name Spoor, he was recruited by Fabian Cortez into the Acolytes, a group of mutants following the philosophy of Magneto that mutants are superior to humans. As part of the Acolytes, Spoor was involved in an attack on a hospital and killed many human patients. In a fight with the British X-team called Excalibur, Spoor tried to manipulate Nightcrawler into killing him, but Nightcrawler managed to resist. It turned out that Spoor hated himself just as much as other humans and in his mind felt that killing humans was wrong and that he therefore deserved to be killed himself.
For a time, he was a prisoner of Excalibur and stayed on Muir Island. Excalibur-ally Doctor Rory Campbell wanted to cure Spoor, but during the treatment Rory's latent hatred of mutants got the better of him and Spoor manipulated Rory into an aggressive attack on him. The automatic security systems in Spoor's cell, known as the Pen, activated and a laser beam severed one of Campbell's legs. Spoor remained on Muir Island for a while, but was then transferred to a facility on the main land. He later escaped and went to Genosha, which was by that time ruled by Magneto.
Later, he died in the Sentinel attack on the island.
Spoor was later resurrected by the Transmode virus from Selene, along with some other Acolytes.