Saturn Girl

Few characters can claim to have helped define an entire corner of the DC Universe, but Saturn Girl — debuting in Action Comics #267 in 1960, courtesy of Otto Binder and Wayne Boring — did exactly that at the dawn of the Silver Age. A fixture of the far-future world of the Legion of Super-Heroes, she has graced the pages of Adventure Comics, Legion of Super-Heroes, and beyond for an extraordinary 66 years, accumulating 169 catalog appearances and 14 key issues that collectors rightly prize. She keeps remarkable company — sharing adventures across the decades with the likes of Cosmic Boy, Lightning Lad, Garth Ranzz, Rokk Krinn, and a certain Clark Kent — which tells you everything about the rarefied tier of DC storytelling she inhabits. If you want a character with deep Silver Age roots, genuine longevity, and a place at the very heart of DC's cosmic mythology, Saturn Girl is an essential discovery.