Iron Thief

A shadowy figure who slipped into the Marvel Universe with a splash in 2016, Iron Thief made their debut in the very first issue of Agents of S.H.I.E.L.D., crafted by Marc Guggenheim and Germán Peralta. That's rarefied company to crash into — sharing pages with the likes of Phil Coulson, Mockingbird, Deathlok, and Agent Leo Fitz from the very start. Rare and elusive with only a handful of catalogued appearances, Iron Thief is exactly the kind of Modern Age discovery that rewards the deep-diving collector who loves unearthing the hidden corners of Marvel's espionage world.