Condor

Taking flight in the Copper Age debut of The New Warriors Annual #1 (1991), Condor is a Marvel creation from the sharp collaborative minds of Fabian Nicieza and Mark Bagley — two architects of some of that era's most energetic storytelling. Over a surprisingly long arc stretching into 2016, this character has surfaced across titles as varied as Nova, The Amazing Spider-Man, and Guardians of the Galaxy, sharing pages with the likes of Peter Parker, Fancy Dan, and cosmic-level company. Eight catalog appearances may sound modest, but a character who keeps turning up across 25 years and that range of titles clearly has staying power worth investigating for any serious Marvel completist.