The Destroyer (Kevin "Keen" Marlow) is a fictional superhero in the Marvel Comics universe, who first appeared in the 1940s during what historians and fans call the Golden Age of comic books. He is significant as being one of the earliest creations of industry legend Stan Lee. As comics historian and former Marvel editor-in-chief Roy Thomas notes: "Stan's most popular superhero creation before the Fantastic Four was the Destroyer, debuting in Mystic Comics #6 (Oct. 1941).
The Destroyer appeared as the cover feature on the last half of the 10-issue anthology Mystic Comics. He went on to star in issues of nearly every Timely superhero anthology, although only one Golden Age story has been reprinted in modern times.One of the World War II-era heroes of Marvel's Golden Age predecessor, Timely Comics, the Destroyer was less popular than the company's stars, the Human Torch, the Sub-Mariner and Captain America.
Yet the Destroyer's sleek, dark costume with a skull motif, his skin-tight blue mask that made him appear inhuman, and his occasional cover appearances worked to make the character more memorable than many others of his era.