“There is a lot of energy between Lars and James, and sometimes that energy can erupt. I know that before I was in the band, Kirk was the guy who was often in the middle, and it was important at that time. And now I feel like sometimes I'm the guy that's in the middle between not just James and Lars, but even Kirk.”

American musician, Metallica bassist

Robert Trujillo is an American musician, best known as the bassist of Metallica. Born Roberto Agustín Miguel Santiago Samuel Trujillo Veracruz, he came to prominence in the late 1980s and 1990s and has been with Metallica since 2003. Before joining Metallica, he played bass for Suicidal Tendencies from 1989 to 1995 and worked with Mike Muir in Infectious Grooves. He later performed with Ozzy Osbourne, Jerry Cantrell, and Black Label Society. Trujillo is Metallica’s longest-serving bassist, and he was inducted into the Rock and Roll Hall of Fame with the band in 2009.