Born as a Mutan civilian, Cruor was a worker for a restaurant on Mutan at the beginning of his adult life, he was corrupted after the Invasion of Mutan, his latent psychic powers led him into becoming a Courier. Cruor fought with the Swarm as leader of the Lance Swarm. His swarm was defeated for the first time at New Antieta by Alpha Squadron.
His Swarm was left intact after the Invasion of Borelecava. He later was rescued by Harkoff and joined his Swarm.