Devil horns are an iconic symbol of heavy metal music. Anyone who is considering devil horns cosplay should know a few important things before they do so, to make sure it’s done properly and safely. The devil horn hand gesture can be traced back to the 1960s with Ronnie James Dio, lead singer of the band Black Sabbath. The devil horns hand gesture was popularized by Ronnie James Dio in his live performances on stage during Black Sabbath concerts. He would use this hand gesture as he sang “Heaven and Hell” from their album Dehumanizer (1992). The devil horn hand gesture became popular among heavy metal fans after that point.…