Mainframe

A Marvel creation of the early '90s Copper Age, Mainframe made their debut in Jim Valentino's celebrated Guardians of the Galaxy run — one of the more inventive corners of the Marvel cosmic universe. Sharing pages with the likes of Vision, Ben Grimm, and Pyreus Kril, this character inhabits a rich, expansive sci-fi world that Valentino built with real ambition. Catalogued in the All-New Official Handbook of the Marvel Universe A to Z, Mainframe has earned a place in Marvel's official cosmology, and with nearly three decades of publication history stretching from 1992 to 2021, there's clearly something enduring about this figure worth digging into for any fan of Marvel's cosmic mythology.