Mike DiMeo is an American hard rock/heavy metal vocalist, best known for his work in the band Riot, which he left in late 2006. He recorded six studio albums and one live album with the group before departing to join Masterplan for the recording of MK II in 2006.

Sebastien is a Czech power metal band from Pardubice and Brno. The band was formed by Jiří "George" Rain in 2008.