Jack Frost

John Dempsey, known professionally as Jack Frost, is an American guitarist. He is one of the founders of the heavy metal band Seven Witches and also a part of The Bronx Casket Company. Frost is also known for playing guitar on Savatage's tour in support of Poets and Madmen in 2001 and 2002 before being dismissed from the band for unspecified reasons. He also toured in Anthrax vocalist Joey Belladonna's backing band, and played in a cover band called Diesel which featured Taz Marazz of Seven Witches, Mike Lepond of Symphony X on bass, and Jim Pepe on lead vocals.

Frost has released two solo albums, Raise Your Fist to Metal in 2003 and Out in the Cold in 2005.