Positron

Positron is a Marvel character who made their debut in the pages of Marvel: The Lost Generation #12 in 2000, courtesy of the legendary creative team of Roger Stern and John Byrne — a pairing that alone signals something worth paying attention to. That series was a fascinating retroactive exploration of Marvel's uncharted Silver and Bronze Age history, and Positron occupies a corner of that rich, revisionist tapestry. With appearances alongside the likes of Pixie, Black Fox, and Reflex, and a nod in the Official Handbook of the Marvel Universe: Teams 2005, this character carries the quiet prestige of Marvel's deeper continuity — rare enough that one of their scant three catalog appearances already carries key-issue status, making Positron a genuine hidden gem for the dedicated collector.