The Blue Beetle (1939)

Dan Garret is a rookie police officer who gains extraordinary abilities after discovering Vitamin 2X, a compound that enhances his strength and makes him nearly indestructible. Suiting up in a distinctive blue costume, Garret becomes the Blue Beetle, taking on gangsters, saboteurs, and costumed villains across a 59-issue run from 1939 to 1950. The series was originally launched by Fox Comics, then briefly produced by Holyoke Publishing for issues 11 through 30 before returning to Fox. Blue Beetle was among the earliest recurring superhero titles of the Golden Age, predating the massive wave of costumed heroes that would follow in the early 1940s. The character's appeal lay in his grounded police procedural origins, blending street-level crime drama with the burgeoning superhero formula. Over the course of the run, Garret faced an escalating range of threats, with the tone shifting from gritty crime action to more fantastical fare as the genre evolved. The series established Blue Beetle as one of the more durable heroes of the Fox stable and a foundational figure in Golden Age superhero publishing.