Grandpa
Bonnie
Peter
Bailey Silverwood
Travis
Roger
Susie
Matt Henderson
Sheriff Edgewood
Technician (as John Green aka Marino)
Debbie (as Molly Lashinsky)
Dr. Vogul
Sammy
Joey
Undercover Cop
Stockboy
Television Reporter
Ernie
Flegmer Brother 1
Flegmer Brother 2
Young Grandpa
Fiz (uncredited)
Mel (voice) (uncredited)