J.K. Simmons Klaus (voice)
Joan Cusack Mrs. Krum (voice)
Rashida Jones Alva (voice)
Jason Schwartzman Jesper (voice)
Norm Macdonald Mogens (voice)
Will Sasso Mr. Ellingboe (voice)
Rodrigo Blaas Thanks
Jorge R. Gutierrez Thanks
Zara Larsson Songs
Mark Osborne Thanks
John Pomeroy Animation
Sergio Pablos Storyboard Artist, Producer, Original Story, Director, Screenplay, Pumpkin / Olaf (voice)
Sergio Mateo Merino Animation
Hudson West Additional Kids Voices (voice)
Finn Carr Ellingboe Boy 1 (voice)
Melissa Cobb Thanks
Zoe Freed Foley Artist
Tony Fucile Animation
Emma Shannon Creepy girl 1 (voice)
Mila Brener Ellingboe Girl 3 (voice)
Adam Bourne Foley Editor
Eve Guastella Animation
Zach Lewis Screenplay
James Baxter Animation
Valentin Lucas Animation
Tucker Meek Ellingboe Boy / Krum Boy (voice)
David Vandervoort Animation
Alfredo Cassano Lead Animator
Marisa Román Producer
Emma Yarovinsky Little Krum Girl (voice)
Andrew Chesworth Animation
Meryl Franck Visual Development
Javier Ledesma Barbolla Additional Storyboarding
Pauline Champetier Animation
Alan Tyler Additional Music
Julian Zane Krum Boy (voice)
Sandro Cleuzo Animation
Evan Agos Ellingboe Boy (voice)
Amanda Philipson Ellingboe Councilwoman (voice)
Toby Schwarz Animation
Lucian Perez Krum Boy / Creepy Boy 2 (voice)
Jinko Gotoh Producer
Paul Williams Animation
Jim Mahoney Screenplay
Gregg Taylor Thanks
Len Simon Animation
Kendall Joy Hall Annelise (voice)
Alfonso G. Aguilar Original Music Composer
Cécile Carre Storyboard Artist, Animation
Edgar Martins Head of Story
Mael Gourmelen Animation
Rebecca Heathcote Foley Artist
Marcel Tigchelaar Animation
Jaeden Bettencourt Krum Boy / Jesper Son (voice)
Matthew Jon Beck Casting
Tanguy Olivier Producer
Bailey Rae Fenderson Creepy Girl 2 (voice)
Paul Cichocki Thanks
Borja Montoro Animation
Slaven Reese Lead Animator
Warren Franklin Executive Producer
Gustavo Ferrada Producer
Damien de Froberville Thanks
Szymon Biernacki Production Design
Carlos Sotolongo Dialogue Editor
Neda Margrethe Labba Margu (voice)
Fernando Moro Character Designer, Animation
Mikel Lejarza Producer
Mercedes Gamero Producer
Eamonn Butler Executive Producer
Sydney Brower Ellingboe Girl (voice)
Alex Relloso Additional Storyboarding