The ‘devil horns’ became synonymous with Dio, who passed away in 2010, during his time fronting Black Sabbath. READ MORE: What rock’n’roll taught Ronnie James Dio Advertisement ...

Of course, Dio would eventually join Black Sabbath temporarily in 1979 as Ozzy Osbourne's replacement, and that's when the late singer really began to get into the horns.

Black Sabbath's Geezer Butler has revealed he first showed Ronnie James Dio the metal devil horns – with Dio then making the sign famous.

Devil horns up! Black Sabbath's back! Black Sabbath, from left, Geezer Butler, Tony Iommi, Bill Ward and Ozzy Osbourne. Chris Walter / WireImage. By Alex Smith.

Telefilm Canada, Rogers invest in “Black Code,” “Devil’s Horn” Telefilm Canada and the Rogers Group of Funds have jointly invested US$1.02 million into five feature-length documentaries ...