Cast of Hey Arnold!

Meet the talented cast of Hey Arnold!. From main characters to supporting roles, discover the actors who bring this show to life.

Starring: Spencer Klein as Arnold (voice), Francesca Marie Smith as Helga Pataki (voice), Jamil Walker Smith as Gerald Johanssen (voice), Olivia Hack as Rhonda Wellington Lloyd (voice), Anndi McAfee as Phoebe Heyerdahl (voice), Justin Shenkarow as Harold Berman (voice), Blake McIver Ewing as Eugene Horowitz (voice), Dan Castellaneta as Grandpa Phil (voice)

Spencer Klein

Arnold (voice)

Francesca Marie Smith

Helga Pataki (voice)

Jamil Walker Smith

Gerald Johanssen (voice)

Olivia Hack

Rhonda Wellington Lloyd (voice)

Anndi McAfee

Phoebe Heyerdahl (voice)

Justin Shenkarow

Harold Berman (voice)

Blake McIver Ewing

Eugene Horowitz (voice)

Dan Castellaneta

Grandpa Phil (voice)