Created by writer/editer Stan Lee and artist/co-plotter Jack Kirby, the team first appeared in The X-Men #1 (September 1963).
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New Mutants #1 (03/1983), first with the codename Psyche. After Marvel Graphic Novel #4 (12/1982) and Marvel Team-Up Annual #6 (01/1983).
Appearances · Danger Room (First appearance) · Cerebro Chamber (First appearance).