Challengers of the Unknown — DC Comics
Issue: #5
Last valuation update: 2026-09-09
After receiving reports of a super-powered criminal who has gained mystical flame powers, the Challengers are called by June Robbins to an archaeological expedition. She and Professor Brandon are seeking the mysterious Star-Stone, a powerful stone that would grant temporary powers. When it becomes known that someone is finding each of the four stones, and using them for ill-gotten gain, the Challe...
First appearances: Professor Brandon, Vreedl
Creators: Jack Kirby
Characters: Ace Morgan, June Robbins, Prof Haley, Red Ryan, Rocky Davis, Professor Brandon, Vreedl