Jason Newste (born March 4, 1963 in Battle Creek, Michigan) is an American bassist best known as the former bassist of Metallica. Currently he is a member of Voivod and Rock Star Supernova. Newsted also goes by the pseudonym Jasonic, which serves as both his alias in Voivod and the name of his music publishing company. He is also founder of the Chophouse Records studio and label based in California.