Klaus Cast
The cast of Klaus including popularity data. Data for May 31, 2025.
Jason Schwartzman
as Jesper (voice)

Jason Schwartzman takes on the role of Jesper, providing his voice to this character.

#1
Most popular actor on Klaus
5,926 Wikipedia views yesterday
J.K. Simmons
as Klaus (voice)

J.K. Simmons delivers an amazing performance as Klaus, bringing this character to life with his voice.

Rashida Jones
as Alva (voice)

Rashida Jones lends her voice to the character Alva, adding depth and emotion to this role.

#2
Most popular actor on Klaus
5,018 Wikipedia views yesterday
Joan Cusack
as Mrs. Krum (voice)

Joan Cusack brings Mrs. Krum to life with her voice, delivering a memorable performance.

#4
Most popular actor on Klaus
3,068 Wikipedia views yesterday
Norm Macdonald
as Mogens (voice)

Norm Macdonald portrays the character Mogens with his unique voice and comedic talent.

#3
Most popular actor on Klaus
4,500 Wikipedia views yesterday
Will Sasso
as Mr. Ellingboe (voice)

Will Sasso adds his voice to the character Mr. Ellingboe, adding humor and charm to this role.

#5
Most popular actor on Klaus
1,826 Wikipedia views yesterday
Sergio Pablos
as Pumpkin / Olaf (voice)

Sergio Pablos provides the voices for both Pumpkin and Olaf, showcasing his versatility as an actor.

Mila Brener
as Ellingboe Girl 3 (voice)

Mila Brener delivers a memorable performance as Ellingboe Girl 3, capturing the essence of this character.

Neda Margrethe Labba
as Margu (voice)
Sydney Brower
as Ellingboe Girl (voice)
Teddy Blum
as Small Ellingboe Boy (voice)
Julian Zane Chowdhury
as Krum Boy (voice)
Emma Shannon
as Creepy girl 1 (voice)
Kendall Joy Hall
as Annelise (voice)
Sky Alexis
as Ellingboe Girl 2 (voice)
Tucker Meek
as Ellingboe Boy / Krum Boy (voice)
Amanda Philipson
as Ellingboe Councilwoman (voice)
Finn Carr
as Ellingboe Boy 1 (voice)
Lucian Perez
as Krum Boy / Creepy Boy 2 (voice)
Emma Yarovinsky
as Little Krum Girl (voice)
Jaeden Bettencourt
as Krum Boy / Jesper Son (voice)
Hailey Hermida
as Krum Girl 1 (voice)
Evan Agos
as Ellingboe Boy (voice)
Leo Miller
as Ellinboe Boy 5 (voice)
Bailey Rae Fenderson
as Creepy Girl 2 (voice)
Ayden Soria
as Creepy Boy 1 (voice)
Reiulf Aleksandersen
as Adult Saami (voice)
Matthew McCann
as Additional Kids Voices (voice)
Hudson West
as Additional Kids Voices (voice)
For the best insights and data about Klaus, visit our main Klaus page.