Lionel Jeffries was a patient at Montreal General Hospital, kept in strict restraints to prevent him from harming others with his mutant flesh-transforming abilities. When investigating Jeffries Heather Hudson was unintentionally exposed and transformed. Jeffries then escaped and transformed many of the hospital's patients and staff before his brother, Madison was able to stop his rampage and help restore some of his sanity. During Jeffries' rampage, he unknowingly helped resurrect Deadly Ernst. While Lionel was offered a chance to accompany Alpha Flight, he opted to stay at the hospital for a time to undo the damage he had caused.