Hey Arnold!

Francesca Marie Smith

Helga Pataki (voice)

Jamil Walker Smith

Gerald Johanssen (voice)

Dan Castellaneta

Grandpa Phil (voice)

Justin Shenkarow

Harold Berman (voice)

Anndi McAfee

Phoebe Heyerdahl (voice)

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Christopher Walberg

Stinky Peterson (voice)

Phillip Van Dyke

Arnold (voice)

Spencer Klein

Arnold (voice)

Olivia Hack

Rhonda Wellington Lloyd (voice)

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Lane Toran

Arnold (voice)

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Sam Gifaldi

Sid (voice)

Blake McIver Ewing

Eugene Horowitz (voice)

Craig Bartlett

Brainy (voice)

Tress MacNeille

Grandma Gertie (voice)

Kath Soucie

Miriam Pataki (voice)

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Steve Viksten

Oskar Kokoshka (voice)

Maurice LaMarche

Big Bob Pataki (voice)

Dom Irrera

Ernie Potts (voice)

Dan Butler

Mr. Simmons (voice)

David Wohl

Principal Wartz (voice)

Ben Diskin

Eugene Horowitz (voice)

Baoan Coleman

Mr. Hyunh (voice)

James Keane

Mr. Green (voice)

Adam Wylie

Curly Gammelthorpe (voice)

Lou Rawls

Harvey (voice)

Christopher Castile

Eugene Horowitz (voice)

Mary Scheer

Suzie Kokoshka (voice)

Nika Futterman

Olga Pataki (voice)

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Danica Ivancevic

Librarian (voice)

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Lauren Robinson

Nadine (voice)

Marcus Toji

Park (voice)

Rick Fitts

Mr. Johanssen (voice)

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Avriel Epps

Timberly Johanssen (voice)

Jordan Warkol

Chocolate Boy (voice)

John Mariano

Vic / Morrie (voice)

Shari Belafonte

Mrs. Johanssen (voice)

Michael Bacall

Torvald (voice)

Joey Paul Jensen

Woman on Street (voice)

Jarrett Lennon

Eugene Horowitz (voice)

Tony Jay

Rex Smythe-Higgins (voice)

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Ashley Buccille

Lila Sawyer (voice)

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Tim Wiley

Edmund (voice)

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Rick Corso

Dino Spumoni (voice)

Jim Belushi

Coach Wittenberg (voice)

Carlos Alazraqui

Nigel / Man (voice)

Lisa Fuson

Danny's Mom / Bratty Kid #2 (voice)

Danielle Judovits

Patricia "Big Patty" Smith (voice)

Maria Bamford

Mayor Dixie (voice)

Michael Welch

Elizabeth Ashley

Mrs. Vitello (voice)