Concept » Earth-17 appears in 41 issues.
Originally formed from the aftermath of World War III which ended on October 29, 1986 in the Pre-Crisis universe. Their first post-Crisis appearance came after Infinite Crisis.
The Challengers of the Unknown are a non-superhero group within the DC Universe created by Jack Kirby. The group mostly focuses on Sci-Fi storylines and is thought to be an inspiration for the Fantastic Four.
The Dog Cavalry are Apokoliptian warriors that ride Demon Dogs in the field as they work to hunt down Darkseid's enemies.
Dalmatian dogs that were mutated to horse-size animals due to the radiation from World War III in October 1986.
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