Marq Torien (born Mark Maytorena on September 22, 1961 in Los Angeles, California) is the lead singer of the hard rock act BulletBoys. He is the only member to have remained with the group since the release of their self-titled debut album in 1988. Prior to BulletBoys, Torien was a guitarist in the then-unsigned band Ratt, a member of Motown recording artists Kagny & the Dirty Rats, and a lead vocalist briefly for the band King Kobra. In addition to periodic BulletBoys ventures, Torien's solo projects included Sexual Chocolate, Ten-Cent Billionaires, and This.

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