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| Matt Cameron : Vocals, Guitar, Drums, Keyboards, Synth, Piano | (ex-Soundgarden, Pearl Jam, Geddy Lee, Hater, Temple of The Dog, ex-Skin Yard, Queens of the Stone Age) |
| John Paul McBain : Guitar, Bass | (ex-Monster Magnet, guest in Desert Sessions) |
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| Ben Shepherd : Vocals, Bass, Guitar | (ex-Soundgarden, Hater, guest in Desert Sessions) (Full time member on the first album, guest on all others) |
| Josh Homme : Guitar, Bass, Vocals | (Kyuss, Queens of the Stone Age, Eagles of Death Metal, Screaming Trees, Guest in Mastodon) |
| Glenn Slater : Keyboards, Piano | (The Walkabouts) |
| Guest Musicians:Kim Thayil : Guitare | (ex-Soundgarden, guest in Probot, Pigeonhed, Presidents of the United States of America, guest for Sunn O))) and Boris)) |
| Guest Musicians:Eddie Vedder : Chant | (Pearl Jam, Temple of The Dog) |
| Guest Musicians:Gerry Amandes : Basse, Claviers | |
| Guest Musicians:Lou Alexander : Basse | |
| Guest Musicians:Luke St.Kimbel : Chant | |
| Guest Musicians:Derek Burns : Chant | |
| Guest Musicians:Paul Burback : Chant | |
| Guest Musicians:Gregg Keplinger : Drums, Percussion | |
| Guest Musicians:April Cameron : Viola | |
| Guest Musicians:Justine Foy : Cello | |
| Guest Musicians:Rebecca Keith : Violin | |
| Guest Musicians:Amy Denio : Saxophone | |