Hey Arnold!

Spencer Klein

Arnold (voice)

Francesca Marie Smith

Helga Pataki (voice)

Jamil Walker Smith

Gerald Johanssen (voice)

Blake McIver Ewing

Eugene Horowitz (voice)

Olivia Hack

Rhonda Wellington Lloyd (voice), Rhonda Wellington Lloyd / Mary (voice)

Phillip Van Dyke

Ludwig (voice), Arnold (voice)

Justin Shenkarow

Harold Berman (voice), Joey (voice), Harold Berman / Robert (voice), Harold Berman / Boy on Bicycle (voice), Harold Berman(voice), Harold Berman / Iggy (voice), Harold Berman (voice; uncredited)

Lane Toran

Arnold (voice), Arnold (singing voice), Wolfgang (voice), Wolfgang / French Boy (voice)

Dan Castellaneta

Grandpa Phil / Reporter (voice), Grandpa Phil / Cop #1 (voice), Grandpa Phil / Chicken Man (voice), Grandpa Phil / Judge (voice), Delivery Man (voice), Grandpa Phil (voice), Big Arnold (voice), Grandpa Phil / Grandpa Phil's Father / Jolly Olly Man (voice), Animal Control Officer (voice), Grandpa Phil / Nick Vermicelli (voice), Nick Vermicelli (voice), Grandpa Phil / Nolo (voice)

Anndi McAfee

Patrice (voice), Phoebe Heyerdahl / Woman (voice), Phoebe Heyerdahl / Joy (voice), Phoebe Heyerdahl / Kid #2, Phoebe Heyerdahl / Clerk (voice), Phoebe Heyerdahl / Girl (voice), Phoebe Heyerdahl / Worker #2 (voice), Phoebe Heyerdahl / Ruth P. McDougal (voice), Phoebe Heyerdahl (voice), Phoebe Heyerdahl / Italian Girl / French Girl (voice)

Michael Welch

Haley Joel Osment

Jess Harnell

Jeremy Suarez

Henry Gibson

Jack Angel

Andy Dick

Fred Willard

Pat Corley

Mayim Bialik

Maria (voice)

Zelda Rubinstein

Georgia Engel

Michael McKean

Kathie Lee Gifford

Elizabeth Ashley

Mrs. Vitello (voice)

Brian Doyle-Murray

Lasombra

Davy Jones

Himself

Christopher Castile

Eugene Horowitz / Robert (voice), Eugene Horowitz (voice)

John Mariano

Vic / Morrie (voice), Zamboni Jones / Banana Guy / Shady Guy (voice)

Danny Cooksey

Stoop Kid (voice)

Shari Belafonte

Mrs. Johanssen (voice)

Pamela Hayden

Connie (voice)

Michael Donovan

Maria's Dad / Cabby (voice)

Ben Diskin

Eugene Horowitz / Kid (voice), Eugene Horowitz (voice)

Quinton Flynn

Man #1 (voice)

Christine Ebersole

Lana Vail (voice)

James Keane

Mr. Green / EBN Announcer (voice), Mr. Green (voice; uncredited), Mr. Green (voice), Hospital Orderly (voice), Mr. Green / Judge (voice)

Danny Strong

Teen #1 / Teen #2 (voice)

Adam Wylie

Curly Gammelthorpe (voice)

Hiep Thi Le

Mai Hyunh (voice)

Jim Belushi

Coach Wittenberg (voice)

Grant Gelt

Tucker Wittenberg (voice)

Marcus Toji

Park / Iggy (voice), Park (voice), Park / Third Grader (voice)

Lou Rawls

Harvey / Pop Daddy (voice), Harvey (voice), Harvey / Bus Driver (voice), Harvey (voice; uncredited)

Max Casella

Tony B. / Philly D. (voice)

Michael Bacall

Tommy (voice), Tony (voice), Torvald (voice)

Tress MacNeille

Grandma Gertie / Harold's Aunt (voice), Grandma Gertie / Arnold's Mother (voice), Grandma Gertie / Interviewer #2 (voice), Grandma Gertie (voice), Miss Slovak (voice), Grandma Gertie / Miss Slovak (voice), Movie Woman (voice), Grandma Gertie / Mayor Dixie (voice), Grandma Gertie / Iggy / Joey (voice)

Mark Hamill

Grubby (voice), Cop (voice)

Kevin Michael Richardson

Blind Man / Newscaster (voice)

Vincent Schiavelli

Pigeon Man (voice), Mr. Bailey (voice)

Caroline Aaron

Moderator (voice), Landlady (voice)

DeeDee Rescher

Torvald's Mother (voice)

Rick Fitts

Mr. Johanssen (voice)

Carlos Alazraqui

Minion (voice), Nigel / Man (voice), Frankie G. / Chas (voice)

Ben Aaron

Jamie O Johanssen (voice)

Mary Scheer

Suzie Kokoshka / Interviewer #1 (voice), Suzie Kokoshka (voice)

Michael Fishman

Joey Stevenson (voice)

Joey Paul Jensen

Woman (voice), Seymour's Mother (voice), Woman on Street (voice), Mindy / Mrs. Uberman (voice)

David L. Lander

Sam the Sewer King (voice)

Jarrett Lennon

Eugene Horowitz (voice)

Baoan Coleman

Mr. Hyunh (voice), Oskar Kokoshka (voice)

Dom Irrera

Ernie Potts / Paper Man (voice), Ernie Potts / Old Man (voice), Guard / Mr. Feltz (voice), Ernie Potts (voice), Stinky's Father (voice)

Lacey Chabert

Ruth P. McDougal (voice)

Lloyd Sherr

Berlitz Teacher / Stylist (voice)

Kath Soucie

Mrs. Vitello (voice), Miriam Pataki (voice), Mrs. Berman (voice), Mrs. Berman / Danny (voice), Miriam Pataki / Nancy Woman (voice), Cecile (voice), Agent (voice), Miriam Pataki / Woman (voice), Mrs. Berman / Miriam Pataki (voice), Hillary / Martha (voice), Mrs. Berman / Mrs. Ryle (voice), Lunch Lady (voice), Mariam Pataki (voice), Miriam Pataki / Yolanda (voice)

Lisa Fuson

Miss Slovak (voice), Movie Woman (voice), Danny's Mom / Bratty Kid #2 (voice)

Craig Bartlett

Brainy / Mr. Packenham (voice), Big Man (voice), Abner (voice), Brainy / Steel Mill Worker (voice), Brainy / DJ (voice), Brainy / Astronaut / Stockbroker (voice), DJ (voice), Chester (voice), Monkeyman (voice; uncredited), Nashville Ned / Customer #1 (voice), Cabbie / Party Clown (voice), Father (voice), Brainy (voice), Minister (voice), Arnold's Father (voice), Brainy (voice; uncredited), Brainy / Paper Boy (voice), Movie Man / Steve (voice), Mop Guy (voice)

Julia Louis-Dreyfus

Miss Felter (voice)

Ron Perlman

Mickey Kaline (voice), Mickey Kaline / Weiner Cooker (voice)

Elliott Gould

Rabbi Goldberg (voice)

Cathy Moriarty

Tish Wittenberg (voice)

Daniel Stern

Mr. Packenham (voice)

Harvey Korman

Don Reynolds (voice)

Alan Paul

Dino Spumoni (singing voice)

David Wohl

Mr. Berman (voice), Principal Wartz (voice), Mr. Berman / Bus Driver (voice), Principal Wartz / Bad Guy (voice), Principal Wartz / Announcer (voice)

Kathy Najimy

Madame Blanche (voice)

Marty York

Mickey the Weasel / Fifth Grader #1 (voice)

Maurice LaMarche

Big Bob Pataki / Organ Grinder (voice), Big Bob Pataki / Clerk (voice), Big Bob Pataki / Mechanic (voice), Cecile's Dad / Jacques (voice), Big Bob Pataki / Uncle Chuck (voice), Abner (voice), Maurice / Director (voice), Big Bob Pataki / Moderator (voice), Big Bob Pataki (voice), Revis (voice), Big Bob Pataki / TV Man (voice), Stinky's Father / Stinky's Grandpa (voice), Big Bob Pataki / Douglas Cain (voice)

Tony Jay

Rex Smythe-Higgins (voice), Dr. Lipman (voice), Booming Voice (voice)

Nika Futterman

Cynthia (voice), Olga Pataki (voice), Lorenzo's Mother (voice)

John Schuck

Wally / Announcer (voice)

Ashley Buccille

Lila Sawyer (voice)

Danielle Judovits

Patricia "Big Patty" Smith (voice)

Clancy Brown

Dan (voice)

George Takei

Phoebe's Father (voice)

Jean Smart

Phoebe's Mother (voice)

Carol Kane

Emily Dickinson Trophy (voice)

Jamie Farr

Mr. Wacko (voice)

Dan Butler

Mr. Simmons (voice), Mr. Simmons / Dispatcher (voice), Mr. Simmons / Scientist (voice), Mr. Simmons / Houseboy (voice), Mr. Simmons (voice; uncredited), Mr. Simmons / Publisher (voice), Mr. Simmons / Lila's Father (voice)

Jordan Warkol

Chocolate Boy / Jamie (voice), Chocolate Boy (voice)

Sam McMurray

Robbie Fisher (voice)

Ashley Tesoro

Fifth Grader (voice)

Jer Adrianne Lelliott

Little Kid (voice)

Randy Travis

Travis Randall / Mr. Hyunh's Singing (voice)

Mary Gross

Shelley (voice), Nurse / Actress (voice)

Lori Alan

Rhonda's Mother (voice), Secretary / Cop / Candy Lady (voice)

Victor Samuel Lopez

Lorenzo (voice)

Wendy Hammers

Jackie Lee (voice)

Bronson Pinchot

Ronnie Matthews (voice), Director / Chauffeur (voice)

Peter Scolari

Doug LeSham (voice)

Gregg Berger

Policeman / Jolly Olly Boss (voice), Lucky / Worker #1 (voice)

Joseph Ashton

Iggy (voice)

Jane Carr

Inga (voice)

Moira Quirk

Woman / Kid #3 (voice)

Mitzi McCall

Pearl Simmons (voice)

Maria Bamford

Mayor Dixie (voice), Iggy's Mother (voice), Mayor Dixie / Stinky's Grandma (voice)

Rose Marie

Agatha Caulfield (voice)

Tim Curry

Mr. Leichliter (voice)

Josh Ryan Evans

3rd Grader (voice)

Phil LaMarr

Jamie O Johanssen (voice)

Candi Milo

Cherice (voice), The Parrot (voice)

Laraine Newman

Librarian / Kid (voice)

Phyllis Diller

Mitzi