John Krasinski as Project 77 (voice)

Charlyne Yi as Mai (voice)

Jason Sudeikis as Justin Pin / Ares (voice)

Michael Peña as Momo (voice)

David Cross as Dr. Tanner Rice / Q-Bots (voice)

Constance Wu as Molly (voice)

Kiana Ledé as Greenwood (voice)

Anna Akana as Ani (voice)

Issac Ryan Brown as Ric (voice)

Reba Buhr as Diagnostic Computer (voice)

Amber Friendly as Mailbox Drone (voice)

Jet Jurgensmeyer as Junior (voice)

Joe Ksander as Ramen Cup (voice)

Shaye Ogbonna as Fan Boy (voice)

Jon Oswald as Toothbrush / Door (voice)

Betsy Sodaro as Toilet / Gate / Hairbrush (voice)

Fred Tatasciore as Police Robots / Robot Podium / Announcer (voice)

Kitana Turnbull as RJ (voice)

Charlotte Alexis White as Fan Girl (voice)

Emilio Zhou as Junior, Door (voice)

Byron Thames as Additional Voices (voice)

David Acord as Additional Voices (voice)

Holly Dorff as Additional Voices (voice)

Makenna Cowgill as Additional Voices (voice)

Moosie Drier as Additional Voices (voice)

Reyna Amaya as Additional Voices (voice)