Challengers of the Unknown

The Challengers of the Unknown is a fictional group of adventurers appearing in comic books published by DC Comics. The quartet of adventurers explored paranormal occurrences while facing several fantastic menaces.

The characters' provenance is uncertain. Various sources credit the group as the sole creation of artist and storyteller Jack Kirby, a co-creation with writer Dave Wood or a co-creation with Kirby's former partner Joe Simon. Following the end of the Challengers comic, DC has revived the characters in different incarnations over the years.

Some have claimed that Kirby reworked the basic concept of the series with Stan Lee in 1961 to create The Fantastic Four, the first creation that marked the rise of Marvel Comics.