His head is a miniture sun. Introduced in New X-Men Annual #2001 (2001) by Grant Morrison and Leinil Francis Yu, Xorn was kept imprisoned after his powers manifested, even kept away from his twin brother Shen. Both were forced to wear helmets of iron but Xorn was sold to John Sublime. He was rescued by The X-men and was invited to join the team. He would leave to explore the world before hand but was eventually approached by Cyclops. They were attacked by a Cassandra Nova brainwashed Lilandra and her Imperial Guards. He would eventually join the teaching staff of Xavier’s School, which was opened up to all mutants.

He was put in charge of a special class of mutants that were abused because of their appearance or powers. Soon after, Esme Cuckoo started dealing the drug Kick to students and somehow got Xorn addicted to it. Xorn began believing he was Magneto and would later began teaching his students Magneto’s ways. He would eventually reveal his identity as Magneto and led an attack against New York, which resulted in the death of a number of people, including Jean Grey. An enraged Wolverine then killed him. It turned out the Kick drug was actually part of the living bateria John Sublime who inhabited Xorn body and pushed him to these act of terror. After M-Day, he became part of the Collective, the essence of all mutants powers that were lost. He would eventually travel across North America, killing Alpha Flight. He would eventually find Magneto but was defeated by the New Avengers. He would eventually return to life when he was resurrected by the Five alongside his brother.

Xorn was a popular character during his short run in the book. However many people get him and his brother mixed up. He would receive a figure in the second Marvel Legends wave (the Blob wave).