Carla Gugino Orion's Mom (voice)
Colin Hanks Adult Orion (voice)
Jacob Tremblay Orion (voice)
Angela Bassett Sweet Dreams (voice)
Amy Hill Irene (voice)
Golda Rosheuvel Unexplained Noises (voice)
Paul Walter Hauser Dark (voice)
Matt Dellapina Orion's Dad (voice)
Shannon Chan-Kent Adult Hypatia (voice)
Ike Barinholtz Light (voice)
Walt Dohrn Executive Producer, Stray Cat / Insomnia Guy 2 (voice)
Jack Fisher Richie Panici (voice)
Natasia Demetriou Sleep (voice)
Nathan Nance Sound Re-Recording Mixer
Nat Faxon Insomnia (voice)
Werner Herzog Narrator (voice)
Sky Alexis Lisa (voice)
Bonnie Arnold Executive Producer
Charlie Kaufman Writer
Ren Hanami Adult Sally (voice)
Joe Pitt Character Designer
Julien Bocabeille Animation
Steve Slanec Supervising Sound Editor
Hira Ambrosino Woman at the Drive-In (voice)
Lloyd Taylor Additional Writing
Brandon Proctor Sound Re-Recording Mixer
Hanna Kim Story Artist
Jessey Drake Sound Designer
Aparna Nancherla Quiet (voice)
Jason Oliver Dialogue Editor
Ania O'Hare Casting
M. Scott McKee Visual Effects Supervisor
Kaan Kalyon Story Artist
Kent Osborne Story Artist
Tim Nielsen Sound Designer, Supervising Sound Editor, Sound Re-Recording Mixer
Johane Matte Story Artist
Vivian Aguiar-Buff Music
Lyle Nagy Story Artist
Jordan Rosato Story Artist
Brandon Sawyer Additional Writing
Matthew Festle Sound Effects, Sound Editor
Christine Bian Art Direction
Katie Galvan Casting
Toru Uchikado Insomnia Man (voice)
Matthew Bordenave Story Artist
Shino Nakamichi Sally (voice)
Adam Rosette Head of Story
Nik Ranieri Supervising Animator
Sean Charmatz Director, Irene's Boss / Cucumber Dentist / Soda / Insomnia Guy 1 (voice)
Nick Kishiyama Tycho (voice)
Keith Bodmer Assistant Editor
Robert Lydecker Original Music Composer
Ritchie Sacilioc Visual Development
Bruno Etchepare Animation
Charan Paruchuri Production Manager
Justin Ridge Story Artist
Hans Dastrup Head of Animation
Aliki Theofilopoulos Irene's Coworker / Mom / Juice Box / Insomnia Teacher (voice)
Guillaume Fesquet Visual Development
Tom Caulfield Story Artist
Ryan Munk CG Supervisor
Andy Schuhler Visual Development
Shawn Krause Supervising Animator
Miho Tomimasu Visual Development
Alexandra Nickson Music
Brent Tyler VFX Supervisor
Laura Macias Foley Artist
Deepak Ganguly Animation Supervisor
Candice Ray Production Manager
Alyssa Lee Irene's Daughter / Insomnia Girl (voice)
Nico Marlet Character Designer
Jon Magram Story Artist