Challengers of the Unknown
Comic book character
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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... Wikipedia
Creator: Jack Kirby
Base(s): Challengers Mountain
First appearance: Showcase #6 (February 1957)
Member(s): Kyle "Ace" Morgan; Matthew "Red" Ryan; Leslie "Rocky" Davis; Walter Mark "Prof" Haley; June Robbins