Klaus

Jason Schwartzman
Jesper (voice)

J.K. Simmons
Klaus (voice)

Rashida Jones
Alva (voice)

Joan Cusack
Mrs. Krum (voice)

Norm Macdonald
Mogens (voice)

Will Sasso
Mr. Ellingboe (voice)

Mila Brener
Ellingboe Girl 3 (voice)

Neda Margrethe Labba
Margu (voice)

Sydney Brower
Ellingboe Girl (voice)

Teddy Blum
Small Ellingboe Boy (voice)

Julian Zane
Krum Boy (voice)

Emma Shannon
Creepy girl 1 (voice)

Kendall Joy Hall
Annelise (voice)

Sky Alexis
Ellingboe Girl 2 (voice)

Tucker Meek
Ellingboe Boy / Krum Boy (voice)

Amanda Philipson
Ellingboe Councilwoman (voice)

Finn Carr
Ellingboe Boy 1 (voice)

Lucian Perez
Krum Boy / Creepy Boy 2 (voice)

Emma Yarovinsky
Little Krum Girl (voice)

Jaeden Bettencourt
Krum Boy / Jesper Son (voice)