Hey Arnold!

Helga Pataki (voice) (186 episodes)

Gerald Johanssen (voice) (186 episodes)

Grandpa Phil (voice) (152 episodes) / Animal Control Officer (voice) (1 episode) / Grandpa Phil / Cop #1 (voice) (1 episode) / Grandpa Phil / Nick Vermicelli (voice) (1 episode) / Grandpa Phil / Chicken Man (voice) (1 episode) / Big Arnold (voice) (1 episode) / Delivery Man (voice) (1 episode) / Grandpa Phil / Judge (voice) (1 episode) / Nick Vermicelli (voice) (1 episode) / Grandpa Phil / Grandpa Phil's Father / Jolly Olly Man (voice) (1 episode) / Grandpa Phil / Nolo (voice) (1 episode) / Grandpa Phil / Reporter (voice) (1 episode)

Harold Berman (voice) (107 episodes) / Harold Berman(voice) (37 episodes) / Harold Berman / Boy on Bicycle (voice) (1 episode) / Harold Berman / Robert (voice) (1 episode) / Harold Berman / Iggy (voice) (1 episode) / Harold Berman (voice; uncredited) (1 episode) / Joey (voice) (1 episode)

Phoebe Heyerdahl (voice) (102 episodes) / Phoebe Heyerdahl / Worker #2 (voice) (1 episode) / Phoebe Heyerdahl / Joy (voice) (1 episode) / Phoebe Heyerdahl / Clerk (voice) (1 episode) / Phoebe Heyerdahl / Ruth P. McDougal (voice) (1 episode) / Phoebe Heyerdahl / Woman (voice) (1 episode) / Phoebe Heyerdahl / Girl (voice) (1 episode) / Patrice (voice) (1 episode) / Phoebe Heyerdahl / Italian Girl / French Girl (voice) (1 episode) / Phoebe Heyerdahl / Kid #2 (1 episode)

Stinky Peterson (voice) (84 episodes) / Stinky Peterson / Kyle (voice) (2 episodes) / Stinky Peterson / Bratty Kid #1 (voice) (1 episode) / Stinky Peterson (voice; uncredited) (1 episode)

Arnold (voice) (75 episodes) / Ludwig (voice) (1 episode)

Arnold (voice) (73 episodes)

Art Department Manager

Director

Director

Director

Director

Director

Director

Producer

Producer

Music

Theme Song Performance

Story, Writer

Writer, Story

Writer, Story

Writer, Story

Story, Writer

Writer