Celtic Frost
St. Mark (born Reid Cruickshank) joined Celtic Frost in 1985, after leaving the Swiss hard rock band "Crown", for the recording of their "Emperor's Return" E.P. and the highly influential "To Mega Therion" and "Into the Pandemonium" albums. After extensive touring with the group, St. Mark left Celtic Frost in 1988 only to later join the funk metal group Mindfunk, playing drums on their self-titled debut album for Sony/Epic in 1991. He left Mindfunk in 1992 to re-join Celtic Frost for the writing of the unreleased "Under Apollyon's Sun" album.