Hey Arnold!· Season 2 · Episode 13
Arnold's Halloween
Arnold and Gerald send the neighborhood alien crazy as they broadcast a mock Halloween radio show.
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Guest stars
Dan Castellanetaas Grandpa Phil (voice)Christopher Walbergas Stinky Peterson (voice)
Dom Irreraas Ernie Potts (voice)
Tress MacNeilleas Grandma Gertie (voice)
Lou Rawlsas Harvey (voice)
Baoan Colemanas Mr. Hyunh (voice)
Mary Scheeras Suzie Kokoshka (voice)
Kath Soucieas Miriam Pataki (voice)
Adam Wylieas Curly Gammelthorpe (voice)
David Wohlas Principal Wartz (voice)Steve Vikstenas Oskar Kokoshka / Smitty (voice)
Maurice LaMarcheas Big Bob Pataki / Douglas Cain (voice)
James Keaneas Mr. Green / EBN Announcer (voice)
Craig Bartlettas Monkeyman (voice; uncredited)