Miguel Devante is the latest member of a lineage of metahumans who hunt White Martians and were empowered by a virus they created.
After becoming a superhero, Miguel battles Vulcan's enemies, the Coalition of Crime, consisting of Witchazel, Dino-Mite, Monkey-in-the-Middle, Charliehorse, Little B.U.D.D.Y., Flex, Scramjet, and Fishmonger.
Vulcan appears in JSA Classified #19 (January 2007) as an unwilling participant in Roulette's metahuman brawls.
Vulcan is seen pursuing El Diablo in the pages of Suicide Squad as the latter escapes in a commandeered ambulance to Gotham before his Justi-Flyer is disabled by Deadshot.
Miguel wears a special suit of body armor created by previous Vulcans, with gauntlets capable of generating forcefields.