- Matthew Costelloadditional dialogue (uncredited)
- Matthew Costelloadditional story (uncredited)
- Dee Bradley Baker(voice) (uncredited)
- Michael Bell(voice) (uncredited)
- S. Scott Bullock(voice) (uncredited)
- Philip L. Clarke(voice) (uncredited)
- Kat Cressida(voice) (uncredited)
- Charles Dennis(voice) (uncredited)
- Keith Ferguson(voice) (uncredited)
- Jay Gordon(voice) (uncredited)
- Bill Harper(voice) (uncredited)
- Nick Jameson(voice) (uncredited)
- David Kaye(voice) (uncredited)
- Jim Meskimen(voice) (uncredited)
- Matt Prescott Morton(voice) (uncredited)
- Daran Norris(voice) (uncredited)
- Rob Paulsen(voice) (uncredited)
- Phil Proctor(voice) (uncredited)
- André Sogliuzzo(voice) (uncredited)
- Jim Ward(voice) (uncredited)
- Wally Wingert(voice) (uncredited)
- Edward Yin(voice) (uncredited)
- Keone Young(voice) (uncredited)
- Andy Changartist
- Kevin Cloudartist
- Patrick Duffymedia artist (as Pat Duffy)
- Kenneth Scottlead artist
- Christian Antkowsound designer
- Richard Adriansound effects designer (uncredited)
- Michael Camellosound designer (uncredited)
- Jason Freedmanadditional sound effects (uncredited) / supervising sound editor (uncredited)
- Michael Edward Johnsonsound effects designer (uncredited)
- Eric Lindemannsound designer: weapons (uncredited)
- Trent Reznorsound designer (uncredited)
- Rik Schafferadditional sound effects (uncredited)
- James Houskaanimator
- Fredrik Nilssonanimator
- Chris Vrennaproducer: theme music
- Clint Walshcomposer: theme music
- Timothee Bessetprogrammer
- Mal Blackwelldesigner
- John Carmacktechnical director
- Robert A. Duffylead programmer
- Todd Hollensheadceo: ID Software
- Matt Hooperdesigner
- Donna Jacksonid mom / office manager
- Jerry Keehandesigner
- Steve Rescoedesigner
- Brian Harrisadditional thanks
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