# List of Megadeth band members

Megadeth is an American thrash metal band formed by guitarist/vocalist Dave Mustaine after he was fired from Metallica. The first line-up, in 1983, after their name change from Fallen Angels, featured Mustaine and Robbie McKinney on guitar, vocalist Lor Kane and bassist Matt Kisselstein. The band's current line-up includes consistent member Mustaine, bassist James LoMenzo (2006 to 2010, and since 2021), drummer Dirk Verbeuren (since 2016) and guitarist Teemu Mäntysaari (since 2023).

## History

The original Megadeth lineup was short-lived; Lor Kane, the band's first vocalist, would soon leave the group, (though he did play on the groups 1983 demo). The band's first bassist, Matt Kisselstein, was replaced by Minnesotan David Ellefson and guitarist Robbie McKinney was replaced with Minnesotan Greg Handevidt (who was Ellefson's roommate). After playing with various vocalists following Kane's exit, including Billy Bonds and John Cyriis, Mustaine ultimately took up lead vocals himself. Megadeth recorded Last Rites, a three-song demo, in 1984, which featured drummer Lee Rauch and Ellefson. Slayer guitarist Kerry King covered live dates at Ruthie's Inn and The Stone in February and April 1984 while a permanent replacement was sought. Jazz fusion drummer Gar Samuelson would go on to join the band. After playing a few shows as a three-piece, guitarist Chris Poland also joined. During Megadeth's 1985 tour promoting their debut album, Killing Is My Business... and Business Is Good!, Poland left the band and was temporarily replaced by Mike Albert. On the tour, Mustaine offered the drummer position to Exciter drummer Dan Beehler, though he declined the offer. Poland then rejoined Megadeth in October of the same year, shortly before they began work on Peace Sells... but Who's Buying? After years of problems stemming from substance abuse, Mustaine fired both Poland and Samuelson before recording the third album So Far, So Good... So What! Poland was initially replaced by Jay Reynolds, who proved unable to perform the solos in-studio and was replaced by Jeff Young, his guitar instructor. Samuelson was replaced in 1987 by Chuck Behler, who was his drum tech.
During their world tour in support of So Far, So Good... in February 1988, Mustaine noticed problems developing with Behler. Six months later, Mustaine fired both Behler and Young. In July 1989, Nick Menza was hired to replace Behler on the drums. After a lengthy search for a new lead guitarist, Megadeth enlisted Marty Friedman, who officially joined in February 1990. The lineup remained unchanged for almost eight years, until Menza discovered a tumor on his knee, which forced him to leave the tour to undergo surgery. He was replaced by Jimmy DeGrasso, temporarily at first. Following the Ozzfest tour in 1998, however, DeGrasso replaced Menza permanently, after Mustaine claimed that Menza had "lied about having cancer". Following the release of Risk, the band began a new world tour in September 1999. Three months into the tour, Friedman announced that he would be leaving the band, citing "musical differences". Megadeth enlisted guitarist Al Pitrelli as Friedman's replacement in January 2000. In early 2002, Mustaine suffered several injuries, which led him to announce in a press release that Megadeth had disbanded. Following nearly a year of recovery, Mustaine began work on what was to be his first solo album. The new material was recorded with session musicians Vinnie Colaiuta and Jimmy Lee Sloas, but the project was put on hold when Mustaine agreed to remix and remaster Megadeth's eight-album back catalog with Capitol Records.
In May 2004, Mustaine returned to his newest recordings, intended as a solo effort, but because of outstanding contractual obligations with the band's European label EMI, he was forced to release one more album under the "Megadeth" name. Mustaine decided to reform the band, and contacted the Rust in Peace line-up to re-record backing tracks on his latest songs. While drummer Nick Menza initially signed on, Marty Friedman and David Ellefson were both unable to come to an agreement with Mustaine. Chris Poland was hired by Mustaine to contribute guitar solos for the new album. This marked the first time since the Rust in Peace demos that the two musicians had worked together.
Poland opted to serve as a studio musician only, as he wished to remain focused on his own jazz fusion project, Ohm. Megadeth began a world tour in October 2004, enlisting bassist James MacDonough and guitarist Glen Drover. While in rehearsal for the tour, newly returned drummer Menza once again parted ways with the band, as, according to Mustaine, he was unable to prepare for the physical demands of a full U.S. tour. He was replaced five days before the first show by Shawn Drover, brother of new guitarist Glen Drover. In February 2006, MacDonough left the band, citing "personal differences" for his decision, and was replaced by bassist James LoMenzo. Two years later, Dave Mustaine announced that Glen Drover had quit Megadeth to focus on his family. He was replaced by Chris Broderick. On February 8, 2010, David Ellefson rejoined the band, replacing James LoMenzo.
In late November 2014, Shawn Drover quit the band after ten years, wanting to pursue his own musical interests. This was quickly followed by the departure of Chris Broderick, due to artistic and musical differences. Ellefson denied rumors that the band would disband, and said he and Mustaine would continue working on new music. In early 2015, Megadeth announced that Brazilian guitarist Kiko Loureiro was hired as the new guitar player for the band to record Megadeth's fifteenth studio album alongside Lamb of God's drummer, Chris Adler. On July 7, 2016, Soilwork's Dirk Verbeuren was announced as Megadeth's new drummer.
Ellefson was dismissed from Megadeth amid allegations of sexual misconduct on May 14, 2021. Former bassist James LoMenzo returned to the line-up in August for the Metal Tour Of The Year. LoMenzo officially became the band's new bassist in May 2022.
In September 2023, Kiko Loureiro announced he would be taking a break from the tour in order to spend time with his children, with Teemu Mäntysaari filling in for the rest of the tour. However, in November 2023, Kiko stated he would be extending his break, entering an indefinite hiatus, while Mustaine confirmed that the band would go on with Mäntysaari as guitarist. That same month, Loureiro confirmed that he had left the band.

## Members
### Current

| Name | Years active | Instruments | Release contributions |
| Dave Mustaine | 1983–20022003–present | guitarslead vocalspianobass | All Megadeth releases |
| James LoMenzo | 2006–20102021–present | bassbacking vocals | United Abominations (2007)Endgame (2009)"Delivering the Goods" (2022) (Non-album single) |
| Dirk Verbeuren | 2016–present (touring musician earlier in 2016) | drums | The Sick, the Dying... and the Dead! (2022)"Delivering the Goods" (2022) (Non-album single) |
| Teemu Mäntysaari | 2023–present (touring musician earlier in 2023) | guitarsbacking vocals | none to date |

### Former

| Name | Years active | Instruments | Release contributions |
| Matt Kisselstein | 1983 | bass | none |
| Robbie McKinney | 1983 | guitars | none |
| Lor Kane | 1983 | vocals | Unreleased 1983 demo |
| Greg Handevidt | 1983 | guitars | Unreleased 1983 demo |
| Richard Girod | 1983 | drums | Unreleased 1983 demo |
| David Ellefson | 1983–20022010–2021 | bassbacking vocals | All Megadeth releases from the unreleased 1983 demo to Rude Awakening (2002) and from Rust in Peace Live (2010) to Dystopia (2016) |
| John Cyriis | 1983 | lead vocals | none |
| Billy Bonds | 1983 | lead vocals | none |
| Brett Frederickson | 1983 (died 2019) | drums | none |
| Dijon Carruthers | 1983 | drums | none |
| Lee Rauch | 1984 (died 2023) | drums | Last Rites (contested) |
| Gar Samuelson | 1984–1987 (died 1999) | drums | Last Rites (contested)Killing Is My Business... and Business Is Good! (1985)Peace Sells... but Who's Buying? (1986) |
| Chris Poland | 1984–19851985–19871990 (session only)2004 (session only) | guitars | Killing Is My Business... and Business Is Good! (1985)Peace Sells... but Who's Buying? (1986)Rust in Peace (1990) (bonus tracks only)The System Has Failed (2004) |
| Mike Albert | 1985 | guitars | none |
| Jay Reynolds | 1987 | guitars | none |
| Jeff Young | 1987–1989 | guitars | So Far, So Good... So What! (1988) |
| Chuck Behler | 1987–1989 | drums | So Far, So Good... So What! (1988) |
| Nick Menza | 1989–19982004 (died 2016) | drumsbacking vocals | all Megadeth releases from Rust in Peace (1990) to Cryptic Writings (1997) |
| Marty Friedman | 1990–2000 (guest at two shows in 2023) | guitarsbacking vocals | all Megadeth releases from Rust in Peace (1990) to Risk (1999) |
| Jimmy DeGrasso | 1998–2002 | drums | Risk (1999)The World Needs a Hero (2001)Rude Awakening (2002) |
| Al Pitrelli | 2000–2002 | guitarsbacking vocals | The World Needs a Hero (2001)Unplugged in Boston (2021)Rude Awakening (2002) |
| Jimmie Lee Sloas | 2004 | bass | The System Has Failed (2004) |
| Vinnie Colaiuta | 2004 | drums | The System Has Failed (2004) |
| Glen Drover | 2004–2008 | guitarsbacking vocals | That One Night: Live in Buenos Aires (2005)Gigantour (2006)United Abominations (2007) |
| James MacDonough | 2004–2006 | bassbacking vocals | That One Night: Live in Buenos Aires (2005)Gigantour (2006) |
| Shawn Drover | 2004–2014 | drumsbacking vocals | all Megadeth releases from That One Night: Live in Buenos Aires (2005) to Countdown to Extinction: Live (2013) |
| Chris Broderick | 2008–2014 | guitarsbacking vocals | All Megadeth releases from Endgame (2009) to Super Collider (2013) |
| Kiko Loureiro | 2015–2023 | guitarsbacking vocalspianoflute | Dystopia (2016)The Sick, the Dying... and the Dead! (2022)"Delivering the Goods" (2022) (Non-album single) |
| Chris Adler | 2015–2016 | drums | Dystopia (2016) |

## Other contributors
### Session

| Name | Years active | Instruments | Release contributions |
| Steve Jones | 1988 (guest) | guitar solo on "Anarchy in the U.K." | So Far, So Good... So What! (1988) |
| Jimmie Wood | 1994 | harmonica on "Train of Consequences" and "Elysian Fields" | Youthanasia (1994) |
| Bob Findley | 20012013 | trumpet on "Silent Scorn"horn on "A House Divided" | The World Needs a Hero (2001)Super Collider (2013) |
| Heather Keckler | 2001 | spoken word on "The World Needs a Hero" and "1000 Times Goodbye" | The World Needs a Hero (2001) |
| Suzie Katayama | 2001 | strings on "Promises" and "Losing My Senses" | The World Needs a Hero (2001) |
| Ken Mary | 2001 | Pro Tools | The World Needs a Hero (2001) |
| Chris Vrenna | 2001–2002 | Pro Tools | The World Needs a Hero (2001)Killing is My Business... Remastered (2018) |
| Tim Akers | 2004 | keyboards | The System Has Failed (2004) |
| Darien Bennet | 2004 | additional vocals on "Blackmail the Universe" | The System Has Failed (2004) |
| Michael Davis | 2004 | sound effects | The System Has Failed (2004) |
| Lance Dean | 2004 | additional vocals | The System Has Failed (2004) |
| Scott Harrison | 2004 | additional vocals | The System Has Failed (2004) |
| Celeste Amber Montague | 2004 | additional vocals on "Blackmail the Universe" | The System Has Failed (2004) |
| Justis Mustaine | 2004 | backing spoken word vocals | The System Has Failed (2004) |
| Ralph Patlan | 2004 | additional vocalsspoken word | The System Has Failed (2004) |
| Robert Venable | 2004 | additional vocals | The System Has Failed (2004) |
| Jonathan Yudkin | 2004 | stringsbanjo | The System Has Failed (2004) |
| Eric Darken | 200420162022 | percussion | The System Has Failed (2004)Dystopia (2016)The Sick, the Dying... and the Dead! (2022) |
| Charlie Judge | 20042016 | keyboardsorchestral arrangements | The System Has Failed (2004)Dystopia (2016) |
| Chris Rodriguez | 2004–20112016 | backing vocals | The System Has Failed (2004)United Abominations (2007)Endgame (2009)Thirteen (2011)Dystopia (2016) |
| Axel Mackenrott | 2007 | keyboards | United Abominations (2007) |
| Cristina Scabbia | 2007 | guest vocals on "À Tout le Monde (Set Me Free)" | United Abominations (2007) |
| Brett Caldas-Lima | 2007 | spoken word vocals on "United Abominations" | United Abominations (2007) |
| Marie Soler | 2007 | spoken word vocals on "United Abominations" | United Abominations (2007) |
| Chris Clancy | 2009 | backing vocals | Endgame (2009) |
| Mark Newby-Robson | 2009 | keyboards on "The Hardest Part of Letting Go...Sealed with a Kiss" | Endgame (2009) |
| David Draiman | 2013 | vocals on "Dance in the Rain" | Super Collider (2013) |
| Yao Zhao | 2013 | cello on "Dance in the Rain" | Super Collider (2013) |
| Tom Cunningham | 2013 | fiddle on "The Blackest Crow"violin on "Dance in the Rain" | Super Collider (2013) |
| The Shannon Rovers Irish Pipe Band (Brian Costello, Sean Costello, Mary Kate Peterson) | 2013 | bagpipes on "Built for War" | Super Collider (2013) |
| Electra Mustaine | 2013 | backing vocals on "Forget to Remember" and "Beginning of Sorrow" | Super Collider (2013) |
| Sarah Phelps | 2013 | backing vocals on "Beginning of Sorrow" | Super Collider (2013) |
| Willie Gee | 2013 | guest speaker on "The Blackest Crow" | Super Collider (2013) |
| Farah Siraj | 2015 | vocals on "The Threat Is Real" and "Poisonous Shadows" | Dystopia (2016) |
| Miles Doleac | 2015 | voiceover in "Conquer or Die!" | Dystopia (2016) |
| Blair Masters | 2015 | keyboardsprogramming | Dystopia (2016) |
| Steve Di Giorgio | 2021 | bass | The Sick, the Dying... and the Dead! (2022) |
| Ice-T | 2021 | guest vocals on "Night Stalkers" | The Sick, the Dying... and the Dead! (2022) |
| Sammy Hagar | 2021 | guest vocals on "This Planet's on Fire" | The Sick, the Dying... and the Dead! (2022) |
| Brandon Ray | 2021 | additional vocals on "The Sick, the Dying... and the Dead!", "Life in Hell", "Sacrifice", "Junkie", "Killing Time", "Soldier On!", "Célebutante", "Mission to Mars" and "We'll Be Back" | The Sick, the Dying... and the Dead! (2022) |
| Roger Lima | 2021 | keyboardseffects | The Sick, the Dying... and the Dead! (2022) |
| Luliia Tikhomirova | 2021 | voices on "Dogs of Chernobyl" | The Sick, the Dying... and the Dead! (2022) |
| Bill Elliot | 2021 | voices on "Junkie" | The Sick, the Dying... and the Dead! (2022) |
| John Clement | 2021 | voices on "Soldier On!" and "Mission to Mars" | The Sick, the Dying... and the Dead! (2022) |
| The Marching Metal Bastards | 2021 | voices on "Soldier On!" | The Sick, the Dying... and the Dead! (2022) |
| Maila Kaarina Rantanen | 2021 | voices on "Mission to Mars" | The Sick, the Dying... and the Dead! (2022) |

### Live

| Image | Name | Years active | Instruments | Notes |
| | Kerry King | 1984 (guest 2010) | guitars | Slayer guitarist Kerry King performed with the band when Mustaine became lead singer but did not join full time due to his commitment to Slayer. He later guested with the band in 2010. |
| | Tony Laureano | 2015–2016 | drums | Laureano substituted for Chris Adler when the latter's schedule wouldn't permit him to play. |

## Line-ups

| Period | Members | Studio releases |
| April–June 1983 (as Fallen Angels) | Dave Mustaine – guitar Matt Kisselstein – bass Lor Kane – vocals Robbie McKinney – guitar | none – rehearsals only |
| ca. June 1983 (as Megadeth) | Dave Mustaine – guitar Matt Kisselstein – bass Lor Kane – vocals Robbie McKinney – guitar | none – rehearsals only |
| ca. June 1983 | Dave Mustaine – guitar Lor Kane – vocals Greg Handevidt – guitars | none – rehearsals only |
| ca. June 1983 | Dave Mustaine – guitar Lor Kane – vocals David Ellefson - bass Greg Handevidt – guitars | none – rehearsals only |
| June–July 1983 | Dave Mustaine – guitar Lor Kane – vocals David Ellefson – bass Dijon Carruthers – drums | none – rehearsals only |
| Summer 1983 | Dave Mustaine – lead guitar Lor Kane – vocals David Ellefson – bass Greg Handevidt – guitar Dijon Carruthers – drums | none – rehearsals only |
| Summer 1983 | Dave Mustaine – lead guitar Lor Kane – vocals David Ellefson – bass Greg Handevidt – guitar Richard Girod – drums | Unreleased demo |
| July–August 1983 | Dave Mustaine – guitar David Ellefson – bass Greg Handevidt – guitar Richard Girod – drums | none – rehearsals only |
| August–September 1983 | Dave Mustaine – guitar David Ellefson – bass Greg Handevidt – guitar Dijon Carruthers – drums | none – rehearsals only |
| September–November 1983 | Dave Mustaine – guitar David Ellefson – bass Dijon Carruthers – drums John Cyriis – vocals | none – rehearsals only |
| 1983 | Dave Mustaine – guitar David Ellefson – bass, backing vocals Lee Rauch – drums Billy Bonds – vocals | none – rehearsals only |
| November–December 1983 | Dave Mustaine – guitar David Ellefson – bass Brett Frederickson – drums | none – rehearsals only |
| December 1983 − April 1984 | Dave Mustaine – guitar, vocals David Ellefson – bass, backing vocals Lee Rauch – drums Kerry King – guitar | none – live shows and rehearsals |
| April–July 1984 | Dave Mustaine – guitar, vocals David Ellefson – bass, backing vocals Lee Rauch – drums | none – rehearsals and 1984 demo |
| July–October 1984 | Dave Mustaine – guitar, vocals David Ellefson – bass, backing vocals | none – rehearsals only |
| October–December 1984 | Dave Mustaine – guitar, vocals David Ellefson – bass, backing vocals Gar Samuelson – drums | none – live shows only |
| December 1984 – July 1985 | Dave Mustaine – guitar, piano, vocals David Ellefson – bass, backing vocals Gar Samuelson – drums Chris Poland – guitar | Killing Is My Business... and Business Is Good! (1985) |
| July–October 1985 | Dave Mustaine – guitar, piano, vocals David Ellefson – bass, backing vocals Gar Samuelson – drums Mike Albert – guitar | none – live shows only |
| October 1985 – June 1987 | Dave Mustaine – guitar, piano, vocals David Ellefson – bass, backing vocals Gar Samuelson – drums Chris Poland – guitar | Peace Sells... but Who's Buying? (1986) "These Boots Are Made for Walkin'" (1987) (Dudes soundtrack) |
| June–October 1987 | Dave Mustaine – guitar, vocals David Ellefson – bass, backing vocals Chuck Behler – drums Jay Reynolds – guitar | none – rehearsals only |
| October 1987 – January 1989 | Dave Mustaine – guitar, vocals David Ellefson – bass, backing vocals Chuck Behler – drums Jeff Young – guitar | So Far, So Good... So What! (1988) |
| January 1989 – July 1989 | Dave Mustaine – guitar, vocals David Ellefson – bass, backing vocals Chuck Behler – drums | Rust in Peace demos |
| July 1989 – November 1989 | Dave Mustaine – guitar, vocals David Ellefson – bass, backing vocals Nick Menza – drums, backing vocals | "No More Mr. Nice Guy" (1989) (Shocker soundtrack) |
| November 1989 – February 1990 | Dave Mustaine – guitar, vocals David Ellefson – bass, backing vocals Nick Menza – drums, backing vocals Chris Poland – guitar | Rust in Peace demos |
| February 1990 – July 1998 | Dave Mustaine – guitar, vocals David Ellefson – bass, backing vocals Nick Menza – drums, backing vocals Marty Friedman – guitar, backing vocals | Rust in Peace (1990) "Go To Hell" (1991) (Bill & Ted's Bogus Journey soundtrack) Countdown to Extinction (1992) "Breakpoint" (1993) (Super Mario Bros. soundtrack) "Angry Again" (1993) (Last Action Hero soundtrack) "99 Ways to Die" (1993) (The Beavis and Butt-Head Experience) "Paranoid" (1994) (Nativity in Black: A Tribute to Black Sabbath) Youthanasia (1994) "Diadems" (1995) (Demon Knight soundtrack) One new track on Hidden Treasures (1995) Cryptic Writings (1997) |
| July 1998 – January 2000 | Dave Mustaine – guitar, vocals David Ellefson – bass, backing vocals Marty Friedman – guitar, backing vocals Jimmy DeGrasso – drums | "Never Say Die" (1999) (Nativity in Black II: A Tribute to Black Sabbath) Risk (1999) |
| January 2000 – April 2002 | Dave Mustaine – guitar, vocals David Ellefson – bass, backing vocals Jimmy DeGrasso – drums Al Pitrelli – guitar, backing vocals | Three new tracks on Capitol Punishment: The Megadeth Years (2000) The World Needs a Hero (2001) |
| Inactive from April 2002 – October 2003 |||
| October 2003 – May 2004 | Dave Mustaine – guitar, vocals (session) Chris Poland – guitar (session) Jimmie Lee Sloas – bass (session) Vinnie Colaiuta – drums (session) | none – sessions only |
| May–July 2004 | Dave Mustaine – guitar, vocals (session) Chris Poland – guitar (session) Jimmie Lee Sloas – bass (session) Vinnie Colaiuta – drums (session) Tim Akers – keyboards (session) Charlie Judge – keyboards (session) Chris Rodriguez – backing vocals (session) | The System Has Failed (2004) |
| July–September 2004 | Dave Mustaine – guitar, vocals Nick Menza – drums, backing vocals | none – rehearsals only |
| September–October 2004 | Dave Mustaine – guitar, vocals Nick Menza – drums, backing vocals James MacDonough – bass, backing vocals Glen Drover – guitar, backing vocals | none – rehearsals only |
| October 2004 – February 2006 | Dave Mustaine – guitar, vocals James MacDonough – bass, backing vocals Glen Drover – guitar, backing vocals Shawn Drover – drums | none – live shows only |
| February–April 2006 | Dave Mustaine – guitar, vocals Glen Drover – guitar, backing vocals Shawn Drover – drums James LoMenzo – bass, backing vocals | none – live shows only |
| April 2006 – January 2007 | Dave Mustaine – guitar, vocals Chris Rodriguez – backing vocals (session) Glen Drover – guitar, backing vocals Shawn Drover – drums, backing vocals James LoMenzo – bass, backing vocals Axel Mackenrott – keyboards (session) | United Abominations (2007) |
| January–November 2007 | Dave Mustaine – guitar, vocals Glen Drover – guitar, backing vocals Shawn Drover – drums James LoMenzo – bass, backing vocals | none – live shows only |
| November 2007 – February 2010 | Dave Mustaine – guitar, piano, vocals Shawn Drover – drums, backing vocals James LoMenzo – bass, backing vocals Chris Broderick – guitar, backing vocals | Endgame (2009) |
| February 2010 – November 2011 | Dave Mustaine – guitar, vocals Chris Rodriguez – backing vocals (session) Shawn Drover – drums, backing vocals Chris Broderick – guitar, backing vocals David Ellefson – bass, backing vocals | Thirteen (2011) |
| November 2011 – November 2014 | Dave Mustaine – guitar, vocals Shawn Drover – drums, backing vocals Chris Broderick – guitar, backing vocals David Ellefson – bass, backing vocals | Super Collider (2013) |
| November 2014 – April 2015 | Dave Mustaine – guitar, vocals David Ellefson – bass, backing vocals | none – rehearsals only |
| December 2014 | Dave Mustaine – guitar David Ellefson – bass, backing vocals Nick Menza – drums | none – rehearsals only |
| 2014 | Dave Mustaine – guitar David Ellefson – bass, backing vocals Nick Menza – drums | Dystopia demos |
| April–July 2015 | Dave Mustaine – guitar, vocals David Ellefson – bass, backing vocals Kiko Loureiro – guitar, backing vocals Chris Adler – drums Charlie Judge – keyboards (session) Blair Masters – keyboards (session) Chris Rodriguez – backing vocals (session) | Dystopia (2016) |
| July 2015 – October 2015 | Dave Mustaine – guitar, vocals David Ellefson – bass, backing vocals Kiko Loureiro – guitar, backing vocals Chris Adler – drums Tony Laureano – drums (touring) | Dystopia (2016) |
| May–July 2016 | Dave Mustaine – guitar, vocals David Ellefson – bass, backing vocals Kiko Loureiro – guitar, piano, backing vocals Chris Adler – drums Dirk Verbeuren – drums (touring) | none – live shows only |
| July 2016 – May 2021 | Dave Mustaine – guitar, vocals David Ellefson – bass, backing vocals Kiko Loureiro – guitar, piano, backing vocals Dirk Verbeuren – drums | none – live shows only |
| May–June 2021 | Dave Mustaine – guitar, vocals, bass Kiko Loureiro – guitar, piano, backing vocals, flute Dirk Verbeuren – drums | The Sick, the Dying... and the Dead! (2022) |
| June–August 2021 | Dave Mustaine – guitar, vocals Kiko Loureiro – guitar, piano, backing vocals, flute Dirk Verbeuren – drums Steve Di Giorgio – bass (session) | The Sick, the Dying... and the Dead! (2022) |
| August–December 2021 | Dave Mustaine – guitar, vocals Kiko Loureiro – guitar, piano, backing vocals, flute Dirk Verbeuren – drums Steve Di Giorgio – bass (session) James LoMenzo – bass, backing vocals (touring) | The Sick, the Dying... and the Dead! (2022) |
| December 2021 – November 2023 | Dave Mustaine – guitar, vocals Kiko Loureiro – guitar, piano, backing vocals Dirk Verbeuren – drums James LoMenzo – bass, backing vocals (touring till May 2022) Teemu Mäntysaari – guitar, backing vocals (touring September 2023) | "Delivering the Goods" (2023) (single) |
| November 2023 – present | Dave Mustaine – guitar, vocals Dirk Verbeuren – drums James LoMenzo – bass, backing vocals Teemu Mäntysaari – guitar, backing vocals | |