Hammer

Stepping onto the DC stage in 1987's Who's Who: Update '87, Hammer is a Copper Age figure whose catalog footprint is compact but intriguing — the kind of character who hints at a wider world of Cold War-era intrigue. Sharing pages with the likes of Green Lantern, Bruce Wayne, and the suggestively named Sickle, Hammer clearly moves in consequential company, turning up in Suicide Squad and the Justice League Wedding Special across a span of two decades. Four appearances may be a slim dossier, but in comics, sometimes the most fascinating characters are the ones who linger at the edges of the big stories, waiting to be rediscovered.