Hey Arnold!

Francesca Marie Smith

Helga Pataki (voice)

Jamil Walker Smith

Gerald Johanssen (voice)

Dan Castellaneta

Grandpa Phil (voice)

Olivia Hack

Rhonda Wellington Lloyd (voice)

Anndi McAfee

Phoebe Heyerdahl (voice)

Justin Shenkarow

Harold Berman (voice) / Harold Berman(voice)

Ben Diskin

Eugene Horowitz (voice)

Lane Toran

Arnold (voice)

Phillip Van Dyke

Arnold (voice)

Spencer Klein

Arnold (voice)

Blake McIver Ewing

Eugene Horowitz (voice)

Christopher Walberg

Stinky Peterson (voice)

Sam Gifaldi

Billy (voice) / Sid (voice) / Sid / Robert (voice)

Craig Bartlett

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

Tress MacNeille

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

Dom Irrera

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

Kath Soucie

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

Steve Viksten

Caesar (voice; uncredited) / Italian Boy (voice) / Oskar Kokoshka (voice) / Oskar Kokoshka / Burt (voice) / Oskar Kokoshka / Caesar (voice) / Oskar Kokoshka / Caesar (voice; uncredited) / Oskar Kokoshka / Casa Paradiso Spokesman (voice) / Oskar Kokoshka / Cop #2 (voice) / Oskar Kokoshka / Smitty (voice) / Oskar Kokoshka / Stagehand (voice)

Maurice LaMarche

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

Baoan Coleman

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

James Keane

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

Christopher Castile

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

Dan Butler

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

Lou Rawls

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

David Wohl

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

Mary Scheer

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

Adam Wylie

Curly Gammelthorpe (voice)

Marcus Toji

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

John Mariano

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

Shari Belafonte

Mrs. Johanssen (voice)

Lauren Robinson

Nadine (voice)

Danica Ivancevic

Flight Attendant (voice) / Librarian (voice) / Mother / Woman (voice; uncredited) / Officer Pudney (voice) / Receptionist (voice) / Sabrina (voice)

Joey Paul Jensen

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

Michael Bacall

Tommy (voice) / Tony (voice) / Torvald (voice)

Frank Martorana

Burt (voice) / Thug / Teen #3 (voice)

Nika Futterman

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

Rick Corso

Dino Spumoni (voice)

Lisa Fuson

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

Carlos Alazraqui

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

Tony Jay

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

Rick Fitts

Mr. Johanssen (voice)

Avriel Epps

Timberly Johanssen (voice)

Jordan Warkol

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

Ashley Buccille

Lila Sawyer (voice)

Mayim Bialik

Maria (voice)

Elizabeth Ashley

Mrs. Vitello (voice)

Ron Perlman

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

Billy Riback

Announcer / PSA Guy (voice) / TV Reporter / Announcer (voice)

Jim Belushi

Coach Wittenberg (voice)

Mark Hamill

Cop (voice) / Grubby (voice)

Jarrett Lennon

Eugene Horowitz (voice)

Tim Wiley

Edmund (voice) / Edmund / Fifth Grader #2 (voice)

Steven Hartman

Curly (voice)

Danny Cooksey

Stoop Kid (voice)

Pamela Hayden

Connie (voice)

Michael Donovan

Maria's Dad / Cabby (voice)

Quinton Flynn

Man #1 (voice)

Christine Ebersole

Lana Vail (voice)

Jim Lang

The Mad Engineer (voice)

Danny Strong

Teen #1 / Teen #2 (voice)

Vincent Schiavelli

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

Caroline Aaron

Landlady (voice) / Moderator (voice)

Danielle Judovits

Patricia "Big Patty" Smith (voice)

Maria Bamford

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

Brian Doyle-Murray

Lasombra

Hiep Thi Le

Mai Hyunh (voice)

Grant Gelt

Tucker Wittenberg (voice)

Max Casella

Tony B. / Philly D. (voice)

Kevin Michael Richardson

Blind Man / Newscaster (voice)

Lacey Chabert

Ruth P. McDougal (voice)

Elliott Gould

Rabbi Goldberg (voice)

Cathy Moriarty

Tish Wittenberg (voice)

Joey Stinson

Rex Smythe-Higgins III (voice)

Lori Alan

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

Mary Gross

Nurse / Actress (voice) / Shelley (voice)

Victor Samuel Lopez

Lorenzo (voice)

Bronson Pinchot

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

Gregg Berger

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

Jessica Sodd

Marcy (voice)

Tim Curry

Mr. Leichliter (voice)

Candi Milo

Cherice (voice) / The Parrot (voice)

Davy Jones

Himself

Michael Levin

Ray Doppel (voice)

DeeDee Rescher

Torvald's Mother (voice)

Ben Aaron

Jamie O Johanssen (voice)

Joe Purdy

Mr. Purdy (voice; uncredited)

Angie Jaree

Big Bob Jingle Singer (voice)

Michael Fishman

Joey Stevenson (voice)

David L. Lander

Sam the Sewer King (voice)

Lloyd Sherr

Berlitz Teacher / Stylist (voice)

Julia Louis-Dreyfus

Miss Felter (voice)

Jimmy Peterson

Teenage Bully (voice)

Daniel Stern

Mr. Packenham (voice)

Harvey Korman

Don Reynolds (voice)

Alan Paul

Dino Spumoni (singing voice)

John Garry

Lieutenant Major Goose (voice)

Kathy Najimy

Madame Blanche (voice)

Marty York

Mickey the Weasel / Fifth Grader #1 (voice)

John Schuck

Wally / Announcer (voice)

Clancy Brown

Dan (voice)

John Rubano

Sherm (voice)

George Takei

Phoebe's Father (voice)

Jean Smart

Phoebe's Mother (voice)

Carol Kane

Emily Dickinson Trophy (voice)

Jamie Farr

Mr. Wacko (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)

Hari Oziol

Boy in Crowd (voice)

Wendy Hammers

Jackie Lee (voice)

Peter Scolari

Doug LeSham (voice)

Christian Mena

Ronnie Matthews (singing voice)

Steve Fitzpatrick

Floyd / Slim (voice)

Joseph Ashton

Iggy (voice)

Jane Carr

Inga (voice)

Moira Quirk

Woman / Kid #3 (voice)

Mitzi McCall

Pearl Simmons (voice)

Rose Marie

Agatha Caulfield (voice)

Josh Ryan Evans

3rd Grader (voice)

Kyle Gibson

Crony (voice)

Cameron Van Hoy

Big Gino (voice)

Phil LaMarr

Jamie O Johanssen (voice)

Laraine Newman

Librarian / Kid (voice)

Phyllis Diller

Mitzi