Brad Logan, sometimes called Brad Minus, is an American punk rock guitarist from Los Angeles, California, who also owns and operates Blacknoise Recordings, and has collaborated on projects with Alternative Tentacles. Logan was the frontman and guitarist for hardcore punk band F-Minus but is most famous for his work in the group Leftöver Crack.In 2018, Logan joined Adolescents following the death their founding bassist Steve Soto. He is married to Kansas artist and clothing designer Kristen Ferrell.