Daemon grew to loathe baseline humans at a young age. In the future, he participated in the Summers Rebellion against the Sentinels. However, he was difficult for the Summers to keep him in line. After the Summers left, Damon lead the Exhumes, launching devastating raids on humans. One such attack destroyed the human settlement at Del Ray. This lead to the formation of the X.S.E., or Xavier's Security Enforcers. He was later killed in a revolt, and the Exhumes recieved new leadership. He used drugs to alleviate his constant pain.
His skin was burning at all times. He could generate intense heat and flames from any part of his body.