Robert Trujillo

Robert Trujillo

Robert Trujillo is an American bass guitarist best known for his work with Metallica. He has also played with Infectious Grooves, Suicidal Tendencies and Black Label Society.

Quick Facts

Canonical Name Robert Trujillo
Born October 23, 1964
Birthplace Santa Monica, California, United States
Country United States
Occupations bassist, musician
Instruments bass guitar
Gender male
Genres heavy metal music, thrash metal, american, heavy metal
Associated Acts Metallica, Infectious Grooves, Suicidal Tendencies, Black Label Society
Active Years Active since 1978
Website www.metallica.com

Identity and Aliases

Name Type Source
Robert Trujillo Canonical Name System
Rob Trujillo Alias Wikidata
Roberto Agustín Miguel Santiago Samuel Trujillo Veracruz Alias Wikidata
Robert Agustín Miguel Santiago Samuel Trujillo Veracruz Legal name MusicBrainz

Biography

Robert Trujillo is an American bassist and musician whose name is closely tied to Metallica, where his bass guitar work has been a major part of the band’s sound. Born in Santa Monica, California, he has built a career around heavy metal and thrash metal, moving through some of the genre’s most recognized acts.

Before becoming associated with Metallica, Trujillo was also a member of Infectious Grooves, Suicidal Tendencies and Black Label Society. His credits also connect him to The Wedding Band, and he has appeared as an instrumental supporting musician for Ozzy Osbourne, Black Label Society and Jerry Cantrell.

Trujillo’s career spans work starting in 1978, and his name appears across a wide range of band associations and catalogued recordings. He is also listed as the parent of Tye Trujillo and married to Chloe Trujillo.

Career Timeline

Year / Period Event Detail Source
1964 Born Santa Monica, California, United States Wikidata
1978 Career Start Active period begins Wikidata
2003–present Member of Metallica MusicBrainz
1989–1995 Member of Suicidal Tendencies MusicBrainz
1998–2002 Member of Mass Mental? MusicBrainz
2002–2003 Member of Black Label Society Wikidata
Date not specified Member of Coffindrop MusicBrainz
Date not specified Member of wirebox MusicBrainz
Date not specified Member of Project Tru MusicBrainz
Date not specified Member of Medication MusicBrainz
Date not specified Member of Cyco Miko MusicBrainz
Date not specified Member of Infectious Grooves Wikidata

Musical Roles

Trujillo is a bassist and musician whose primary instrument is the bass guitar. His work is associated with heavy metal and thrash metal.

Role Source
bassist Wikidata
musician Wikidata

Bands and Projects

Band / Project Relationship Source
Metallica Member of Wikidata
Infectious Grooves Member of Wikidata
Suicidal Tendencies Member of Wikidata
Black Label Society Member of Wikidata

Releases and Appearances

MusicBrainz lists several release entries connected to Robert Trujillo. These entries may include solo releases, guest appearances, live recordings, and catalogued metadata records.

MusicBrainz-listed Releases and Appearances

Title Year Type Classification Source
The Four Horsemen 2024 Single metadata_listed MusicBrainz
One 2024 Single metadata_listed MusicBrainz
Nothing Else Matters 2021 Single metadata_listed MusicBrainz

Recorded Performances & Appearances

MusicBrainz-listed recording entries connected to Robert Trujillo include:

Song Title Artist / Group Relationship Source
Battery Robert Trujillo Performer MusicBrainz
Come on, Come Over Robert Trujillo Performer MusicBrainz
Enter Sandman Robert Trujillo Performer MusicBrainz
Nothing Else Matters Robert Trujillo Performer MusicBrainz
One Robert Trujillo Performer MusicBrainz
One (instrumental) Robert Trujillo Performer MusicBrainz
The Four Horsemen Robert Trujillo Performer MusicBrainz
The Torture Never Stops Robert Trujillo Performer MusicBrainz

Musical Style and Instruments

Robert Trujillo’s musical profile is rooted in heavy metal and thrash metal, with a bass-driven approach that fits both aggressive and groove-oriented settings. His career has moved through a range of bands and supporting roles across the metal landscape.

Genres

heavy metal music thrash metal american heavy metal

Instruments

bass guitar

Collaborations and Guest Relationships

Artist Relationship Source
The Wedding Band Founder MusicBrainz
Ozzy Osbourne Instrumental supporting musician MusicBrainz
Black Label Society Instrumental supporting musician MusicBrainz
Jerry Cantrell Instrumental supporting musician MusicBrainz
Chloe Trujillo Married MusicBrainz
Tye Trujillo Parent MusicBrainz

External Identifiers & Authority Control

Robert Trujillo’s official website is the Metallica site, and his profile is also associated with identifiers across MusicBrainz and Discogs.

Platform Identifier Purpose Source Confidence Link
Official Website http://www.metallica.com Official website Wikidata High View Profile
MusicBrainz 777038ba-d2b5-41ab-a6c5-57a7e97abdf1 Music metadata Wikidata High View Profile
Discogs 490079 Discography database Wikidata High View Profile
IMDb nm0874235 Film/media profile Wikidata High View Profile
VIAF 85876610 Authority control Wikidata High View Profile
ISNI 0000000361913789 Authority control Wikidata High View Profile
GND 1060079836 Authority control Wikidata High View Profile
Library of Congress no2002063218 Authority control Wikidata High View Profile

Semantic Graph Data (Knowledge Graph)

Subject Predicate Object Source Confidence
Robert Trujillo citizenship United States Wikidata high
Robert Trujillo date_of_birth October 23, 1964 Wikidata high
Robert Trujillo family_name Trujillo Wikidata high
Robert Trujillo gender male Wikidata high
Robert Trujillo given_name Roberto Wikidata high
Robert Trujillo place_of_birth Santa Monica, California, United States Wikidata high
Robert Trujillo member_of Metallica Wikidata high
Robert Trujillo member_of Infectious Grooves Wikidata high
Robert Trujillo member_of Suicidal Tendencies Wikidata high
Robert Trujillo member_of Black Label Society Wikidata high
Robert Trujillo instrument bass guitar Wikidata high
Robert Trujillo occupation bassist Wikidata high
Robert Trujillo occupation musician Wikidata high
Robert Trujillo genre heavy metal music Wikidata high
Robert Trujillo genre thrash metal Wikidata high
Robert Trujillo genre american MusicBrainz medium
Robert Trujillo genre heavy metal MusicBrainz medium
Robert Trujillo genre thrash metal MusicBrainz medium
Robert Trujillo member of band Suicidal Tendencies MusicBrainz high
Robert Trujillo member of band Mass Mental? MusicBrainz high
Robert Trujillo member of band Metallica MusicBrainz high
Robert Trujillo member of band Cyco Miko MusicBrainz high
Robert Trujillo member of band Infectious Grooves MusicBrainz high
Robert Trujillo member of band Medication MusicBrainz high
Robert Trujillo member of band Project Tru MusicBrainz high
Robert Trujillo member of band wirebox MusicBrainz high
Robert Trujillo member of band Coffindrop MusicBrainz high
Robert Trujillo sameAs Official Website Artist ID: http://www.metallica.com Wikidata High
Robert Trujillo sameAs MusicBrainz Artist ID: 777038ba-d2b5-41ab-a6c5-57a7e97abdf1 Wikidata High
Robert Trujillo sameAs Discogs Artist ID: 490079 Wikidata High
Robert Trujillo sameAs IMDb Artist ID: nm0874235 Wikidata High
Robert Trujillo sameAs VIAF Artist ID: 85876610 Wikidata High
Robert Trujillo sameAs ISNI Artist ID: 0000000361913789 Wikidata High
Robert Trujillo sameAs GND Artist ID: 1060079836 Wikidata High
Robert Trujillo sameAs Library of Congress Artist ID: no2002063218 Wikidata High

Frequently Asked Questions

Q: What is Robert Trujillo best known for?

A: He is best known as the bass guitarist for Metallica. His career also includes work with Infectious Grooves and Suicidal Tendencies.

Q: What instrument does Robert Trujillo play?

A: He plays bass guitar. His work is listed under bassist and musician.

Q: What genres is Robert Trujillo associated with?

A: He is associated with heavy metal and thrash metal. Those styles define much of his career.

Q: Where was Robert Trujillo born?

A: He was born in Santa Monica, California, United States.

Q: When was Robert Trujillo born?

A: He was born on October 23, 1964.

Q: Which bands has Robert Trujillo been a member of?

A: He has been a member of Metallica, Infectious Grooves, Suicidal Tendencies and Black Label Society. His broader band history also includes several other projects.

Q: Has Robert Trujillo worked as a supporting musician?

A: Yes, he has been listed as an instrumental supporting musician for Ozzy Osbourne, Black Label Society and Jerry Cantrell.

Q: Is Robert Trujillo connected to any family details in the record?

A: He is listed as the parent of Tye Trujillo and as married to Chloe Trujillo.

Data Quality and Sources

Quality Score
86/100
Last Updated
May 27, 2026
Entity Stats
30 Facts
8 Identifiers
29 Relationships
Primary Sources
Wikidata, MusicBrainz, Discogs, GuitarRank Editorial