Cast
- Will Sasso as Mr. Ellingboe (voice)
- Joan Cusack as Mrs. Krum (voice)
- J.K. Simmons as Klaus (voice)
- Rashida Jones as Alva (voice)
- Norm Macdonald as Mogens (voice)
- Jason Schwartzman as Jesper (voice)
- Sergio Pablos as Pumpkin / Olaf (voice)
- Mila Brener as Ellingboe Girl 3 (voice)
- Neda Margrethe Labba as Margu (voice)
- Sydney Brower as Ellingboe Girl (voice)
- Teddy Blum as Small Ellingboe Boy (voice)
- Julian Zane as Krum Boy (voice)
- Emma Shannon as Creepy girl 1 (voice)
- Kendall Joy Hall as Annelise (voice)
- Sky Alexis as Ellingboe Girl 2 (voice)
