Jonathan Brandis as Casey Pedersen

Charlie Finn as Jim 'Hairball' Morton

Jay R. Ferguson as Isaac Hoskins

Meredith Monroe as Judy Woods

Marin Hinkle as Helen Kerrigan

Fred Willard as Frank Woods

Henry Gibson as Ralph Tyler

Martin Mull as Wayne Simonelli

Danica McKellar as Pam Hatch

Bill Raymond as Ernie Whirly

Matt Salinger as Professor Jeff Griggs

Damon Williams as National Guardsman