Directed by Jamie Mitchell   Written by Craig Bartlett   Joe Ansolabehere   Joseph Purdy   Antoinette Stella   Steve Viksten   Cast Phillip Van Dyke ... Arnold (voice) Jamil Walker Smith ... Gerald Johanssen (voice) (as Jamil W. Smith) Francesca Marie Smith ... Helga Pataki (voice) Dan Castellaneta ... Grandpa 'Steely' Phil / Willie the Jolly Olly Man / Earl / Dr. Murray Steiglitz / Nick Vermicelli / Additional Voices (voice) Christopher Walberg ... Stinky Petersen (voice) (as Christopher P. Walberg) Justin Shenkarow ... Harold Berman (voice) Anndi McAfee ... Phoebe Heyerdahl (voice) Tress MacNeille ... Arnold's Grandma (voice) Steve Viksten ... Oskar Kokoshka / Smitty (voice) Kath Soucie ... Miriam Pataki (voice) (as Kath E. Soucie) Dom Irrera ... Ernie Potts (voice) David Wohl ... Principal Wartz (voice) Baoan Coleman ... Mr. Hyunh (voice) James Keane ... Marty Green / EBN Announcer (voice) Maurice LaMarche ... Big Bob Pataki / Douglas Cain (voice) Lou Rawls ... Harvey (voice) Mary Scheer ... Suzie Kokoshka (voice) Adam Wylie ... Curly Gammelthorpe (voice) Produced by Craig Bartlett   Melinda Wunsch Dilger   Mary Harrington   Michael Lessa   Jamie Mitchell   Joseph Purdy   Kathrin Seitz   Steve Viksten   Original Music by Jim Lang

Additional Info Premiere: October 29, 1997 DVD Release: August 29, 2008 Country: Distributor: Shout! Factory Websites: Production Companies Nicktoons Productions Nubian Nights Worldwide Games Animation (seasons 1-3) Nickelodeon Animation Studios (seasons 4-5) Nickelodeon Network Nicktoons Productions (1996-2004) Snee-Oosh Productions Distributors Nickelodeon Network   (1996-2004) (USA) (TV) CBS All Access   (2020) (USA) (video) (VOD) CBS   (2001) (USA) (TV) Nickelodeon   (USA) (TV) Paramount Home Entertainment   (1997) (USA) (VHS) Paramount Home Entertainment   (2001) (USA) (DVD) Shout! Factory   (2011) (USA) (DVD) (season one) Shout! Factory   (2012) (USA) (DVD) (Season Two, Parts One and Two) Rating Stats Overall Rating -- / 10 Our Rating -- / 10 Your Friends -- / 10 Male Users -- / 10 Female Users -- / 10 Site Ranking #2,842 / 21,074 Site Ranking