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- 1st appearance of the X-Men Gold team: Storm, Archangel, Colossus, Iceman and Jean Grey
- 1st team appearance of the X-Men Blue team: Cyclops, Wolverine, Gambit, Rogue, Psylocke and Beast
- 1st team appearance of The Acolytes: Fabian Cortez, Anne-Marie Cortez, Chrome, Nance Winters, Delgado
- Best-selling comic of all-time with sales of over 8.1 million copies