Brainiac

Brainiac debuted in 1958 as a green-skinned alien villain from the planet Colu, a cold and calculating super-genius who traveled the universe in his spacecraft shrinking and stealing entire cities — including the Kryptonian city of Kandor — to add to his collection. His 12th-level intellect and advanced technology made him one of Superman's most formidable adversaries from his very first appearance.

Few villains in DC's history have proven as enduringly formidable as Brainiac, who burst onto the scene in Action Comics #242 in 1958 — a landmark Silver Age debut crafted by Otto Binder and Al Plastino that itself stands as one of four key collector issues in this character's impressive legacy. Over nearly seven decades of publication, from 1958 all the way to 2026, Brainiac has remained a fixture across Superman, Action Comics, and even Superman '78, cementing a place at the very heart of DC's mythology. The company this villain keeps is extraordinary — sharing pages with Clark Kent, Lex Luthor, Batman, Robin, and Green Lantern speaks to a reach that extends well beyond any single corner of the DC Universe. With 84 catalog appearances and a Silver Age pedigree that has only grown richer with time, Brainiac is essential reading for any serious DC fan.