Hey Arnold! (1996)

Francesca Marie Smith

Helga Pataki (voice)

Jamil Walker Smith

Gerald Johanssen (voice)

Dan Castellaneta

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

Justin Shenkarow

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

Anndi McAfee

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

Christopher Walberg

Stinky Peterson (voice; uncredited) / Stinky Peterson (voice) / Stinky Peterson / Bratty Kid #1 (voice) / Stinky (voice) / Stinky Peterson / Kyle (voice)

Phillip Van Dyke

Arnold (voice) / Ludwig (voice)

Spencer Klein

Arnold (voice)

Olivia Hack

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

Lane Toran

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

Sam Gifaldi

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

Blake McIver Ewing

Eugene Horowitz (voice)