Robert Trujillo is an American bassist with an estimated net worth of $15 million. He is best known for playing bass guitar for the hard rock band Metallica.

Born Robert Agustin Trujillo on October 23, 1964 in Santa Monica, California, he started his career in music with the California crossover trash band Suicidal Tendencies. He also became a member of the band’s side project Infectious Groove with vocalist Mike Muir.

Trujillo also played for Ozzy Osbourne’s band for several years in the late 1990s, as well as with Jerry Cantrell. During this time, he formed an experimental supergroup called Mass Mental with ex-Dub War singer Benji Webbe. He was then recruited to play for a few shows with the Black Label Society band. On February 24, 2003, he started playing electric bass for Metallica along with James Hetfield, Kirk Hammett and Lars Ulrich.

Robert Trujillo plays in a pedal board consisting of an Electro Harmonix Q-Tron, a Tech 21 SansAmp Bass Driver DI, a Tech 21 XXL, a MXR m-135 SmartGate, a Morley Mark Tremonti was pedal, and a Boss OC-2 Octave Pedal which are all powered by a Voodoo Lab Pedal Power.