Marshall Stone III

Born into the pages of X-Factor #88 in 1993, Marshall Stone III arrived during comics' Copper/Modern Age courtesy of the formidable creative pairing of Peter David and Joe Quesada — a debut pedigree that immediately signals this is no throwaway character. Over more than three decades, he's woven himself through the fabric of Marvel's mutant universe, turning up across X-Factor, X-Men, and S.W.O.R.D. in the company of heavy hitters like Alex Summers, Lorna Dane, and Random. His 34 catalog appearances may mark him as a deep-cut rather than a headliner, but that's precisely what makes him a rewarding discovery — a genuine piece of Marvel's rich mutant tapestry, shaped by one of the most celebrated X-Factor runs in the title's history.