Issue: #37
Last valuation update: 2026-10-14
The X-men finally meet Factor Three in Europe, but after a battle are defeated and trapped. They are being trailed by Changeling with a jury of some of X-men's enemies: Vanisher, Unus, Blob and Mastermind. The Mutant-Master is the leader of Factor Three and is helding Professor X and Banshee captive, watching the trial.
First appearances: Mutant-Master
Creators: Artie Simek, Roy Thomas, Ross Andru, Ross Andru, Don Heck
Characters: Angel, Beast, Cyclops, Iceman, Jean Grey, Juggernaut, Professor X, Blob, Banshee, Morph, Unus the Untouchable, Mutant-Master, Mastermind, Vanisher