Bass - Chi Cheng (tracks: 6, 13) , Creature (4) (tracks: 1) , Fieldy (tracks: 1, 2, 12, 14, 15) , Kirk Patrick Seals (tracks: 6, 7) , Lewis Crosby (tracks: 2, 3) , Shawn Economaki (tracks: 5, 8) , Toshiya (2) (tracks: 4, 5)
Drums - Abe Cunningham (tracks: 6, 13) , Püre* (tracks: 1) , Brian Vodinh (tracks: 4, 9) , David Silveria (tracks: 1, 2, 12, 14, 15) , James Culpepper (tracks: 6, 7) , Roy Mayorga (tracks: 5, 8) , Shinya (4) (tracks: 4, 5)
Engineer - Greg Thompson
Executive Producer - Jeffrey Kwatinetz , Peter Katsis
Film Director - Dave Gutt
Guitar - Megladon* (tracks: 1) , Chino Moreno (tracks: 6, 13) , Die (7) (tracks: 4, 5) , James Root (tracks: 5, 8) , Jared Hartmann (tracks: 6, 7) , Josh Rand (tracks: 5, 8) , Kaoru (tracks: 4, 5) , Matt Wantland (tracks: 2, 3) , Munky (tracks: 1, 2, 12, 14, 15) , Ryan "Tater" Johnson* (tracks: 2, 3) , Sameer Bhattacharya (tracks: 6, 7)
Keyboards, Sampler - Frank Delgado (tracks: 6, 13)
Percussion - Püre* (tracks: 1)
Producer - Michael Abrams
Strings - Stephen Carpenter (tracks: 6, 13)
Synthesizer - Megladon* (tracks: 1) , Nner* (tracks: 1)
Vocals - Chino Moreno (tracks: 6, 13, 12) , Corey Taylor (tracks: 8, 9) , Nner* (tracks: 1) , Jesse Hasek (tracks: 2, 3) , Jonathan Davis (tracks: 1, 2, 12, 14, 15) , Kyo (5) (tracks: 4, 5) , Lacey Mosley (tracks: 6, 7) , Exeter* (tracks: 1)
Zither - Megladon* (tracks: 1)