Wolfgang William Van Halen is an American musician. The son of actress Valerie Bertinelli and guitarist Eddie Van Halen, he performed alongside his father and his uncle Alex as the bassist for Van Halen from 2007 to 2020. He also performed with the heavy metal band Tremonti from 2012 to 2016. After his father died in 2020, which led to the disbanding of Van Halen, he began to focus on his solo project Mammoth, in which he performs all instruments and vocals. His debut album Mammoth WVH was released in 2021, and his second album Mammoth II was released in 2023.