Roman Sionis

Few villains to crawl out of Gotham's Bronze Age have left a mark as indelible as Roman Sionis, who made his chilling debut in Batman #387 in 1985 under the hands of Doug Moench and Tom Mandrake. Over four decades of DC storytelling — from Detective Comics to Catwoman to the prestige pages of Absolute Batman — he has remained a fixture of Gotham's darkest corners, sharing those shadowy streets with the likes of Batman, Bruce Wayne, and Selina Kyle. His longevity across 41 years speaks for itself: this is a character the DC Universe simply cannot quit. If you're building a serious appreciation of modern Batman mythology, Roman Sionis is essential reading.