Biography: Senen Reyes (born November 20, 1965), also known by his stage name Sen Dog, is a Cuban-American rapper who is best known as a member of the hip hop group Cypress Hill and as the lead vocalist for the heavy metal band Powerflo. He has been developing a solo career in addition to his work with Cypress Hill and Powerflo, and is the lead vocalist for rap rock band SX-10.