Vulcan was the fierce leader of a subterranean nation, who wished to conquer the nations of Earth's surface. He commanded the "Steam Dwarves" and a fleet of ships that could spray deadly gas. Vulcan was a recurring foe of Dr. Frost and he seemed to prefer a hot environment, which negated Frost's powers.

*Prize Comics #7-9
Category:Villains
Category:1940 Debuts
Category:Comic Book Characters
Category:Prize Characters
Category:Male Characters
Category:Subterranean Characters
Category:Ben Thompson-Creator
Category:Fire Characters
Category:Richard Steele - Creator
Category:Science Fiction Characters
Category:Real Name Unknown
Category:Gwandanaland Characters