Hey Arnold!

Francesca Marie Smith

Helga Pataki (voice)

Jamil Walker Smith

Gerald Johanssen (voice)

Dan Castellaneta

Grandpa Phil / Chicken Man (voice)

Justin Shenkarow

Harold Berman / Robert (voice)

Anndi McAfee

Phoebe Heyerdahl / Woman (voice)

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Christopher Walberg

Stinky Peterson (voice)

Phillip Van Dyke

Arnold (voice)

Spencer Klein

Arnold (voice)

Olivia Hack

Rhonda Wellington Lloyd / Mary (voice)

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Lane Toran

Wolfgang / French Boy (voice)

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Sam Gifaldi

Billy (voice)

Blake McIver Ewing

Eugene Horowitz (voice)

Craig Bartlett

Father (voice)

Tress MacNeille

Grandma Gertie / Miss Slovak (voice)

Kath Soucie

Mrs. Berman / Danny (voice)

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Steve Viksten

Oskar Kokoshka / Burt (voice)

Maurice LaMarche

Maurice / Director (voice)

Dom Irrera

Ernie Potts / Paper Man (voice)

Dan Butler

Mr. Simmons (voice)

David Wohl

Principal Wartz (voice)

Ben Diskin

Eugene Horowitz / Kid (voice)

Baoan Coleman

Mr. Hyunh (voice)

James Keane

Mr. Green (voice)

Adam Wylie

Lou Rawls

Harvey / Pop Daddy (voice)

Christopher Castile

Eugene Horowitz (voice)

Mary Scheer

Suzie Kokoshka (voice)

Nika Futterman

Cynthia (voice)

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Danica Ivancevic

Receptionist (voice)

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Lauren Robinson

Nadine (voice)

Marcus Toji

Park / Iggy (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

Seymour's Mother (voice)

Jarrett Lennon

Eugene Horowitz (voice)

Tony Jay

Booming Voice (voice)

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Ashley Buccille

Lila Sawyer (voice)

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Tim Wiley

Edmund / Fifth Grader #2 (voice)

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Rick Corso

Dino Spumoni (voice)

Jim Belushi

Coach Wittenberg (voice)

Carlos Alazraqui

Minion (voice)

Lisa Fuson

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

Danielle Judovits

Patricia "Big Patty" Smith (voice)

Maria Bamford

Mayor Dixie / Stinky's Grandma (voice)

Michael Welch

Elizabeth Ashley

Mrs. Vitello (voice)