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