Arnold and Gerald try to play a Halloween prank on Grandpa by making him think aliens have landed in the city. However, the broadcast gets leaked and scares everybody in the city.
Arnold (voice)
Gerald Johanssen (voice)
Helga Pataki (voice)
Phoebe Heyerdahl (voice)
Harold Berman (voice)
Stinky Petersen (voice)
Curly Gammelthorpe (voice)
Oskar Kokoshka / Smitty (voice)
Suzie Kokoshka (voice)
Ernie Potts (voice)
Mr. Hyunh (voice)
Harvey (voice)
Douglas Cain / Big Bob Pataki (voice)
Grandpa Phil / Additional Voices (voice)
Arnold's Grandma (voice)
Miriam Pataki (voice)
Principal Wartz (voice)
Marty Green / EBN Announcer (voice)
Director
Writer
Creator
Story
Music
Executive Producer
Writer
Writer
Story
Story
Casting
Supervising Producer
Co-Producer
Co-Producer
Story Editor
Casting Director