Steel

Splashing onto the scene in 1986's Aquaman #2 — courtesy of creators Neal Pozner and Craig Hamilton — Steel is a Copper Age DC character whose debut dropped right at the dawn of comics' modern reinvention era. With a catalog footprint stretching across 26 years, this is a figure who quietly persisted through decades of DC history, turning up in company that includes heavy-hitters like Green Lantern, The Flash, Supergirl, and The Spectre. Most prominently featured in DC Universe: Legacies, Steel is one of those fascinating corners of the DC tapestry worth seeking out for collectors who love discovering the connective tissue of a shared universe.