Changeling

Changeling was a mutant and leader of the villainous Factor Three organization, first encountered by the X-Men in 1967. Possessing shapeshifting abilities and limited power mimicry, he emerged as one of the more enigmatic figures in early X-Men mythology.

Stepping out of the Silver Age shadows in The X-Men #37 (1967), Changeling is one of Marvel's more intriguing early additions to the mutant mythology, conjured by the inventive Roy Thomas and Ross Andru during a period when the X-Men's world was expanding in genuinely surprising directions. With two key-issue appearances to their name, this character carries real collector weight despite a relatively compact footprint in the catalog — quality over quantity. Their adventures unfold alongside some of Marvel's most iconic figures: Jean Grey, Cyclops, and Iceman all share the page, placing Changeling squarely in the heart of classic X-Men storytelling. Across series like X-Men: The Hidden Years and even the esoteric Mystic Arcana: The Book of Marvel Magic, Changeling proves to be a quietly fascinating thread woven through four decades of Marvel history — exactly the kind of discovery that makes digging through back issues so rewarding.