Lionel Jeffries was a patient at Montreal General Hopsital, 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.
- Appearances of Montreal General Hospital
- Minor Appearances of Montreal General Hospital
- Media Montreal General Hospital was Mentioned in
- Location Gallery: Montreal General Hospital
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- Marvel Staff members who were born in Montreal General Hospital