 Bobby Rock has played as a touring drummer for Slaughter, but was not in the initial line-up.After Vinnie Vincent Invasion broke up, he briefly joined Nitro, later Nelson, and then went on to play as a session musician with Gary Hoey and other bands.Subsequent to the band's release from their Chrysalis contract and the resultant split of Slaughter and Strum to form Slaughter, Vincent reunited with original Vinnie Vincent Invasion vocalist Robert Fleischman and recorded the unreleased album "Pyro Messiah" (aka Guitars From Hell).