George Henderson
Nancy Henderson
Sarah Henderson
Ernie Henderson
Harry
Jacques Lafleur
Irene Moffitt
Dr. Wallace Wrightwood
George Henderson Sr.
Sgt. Mancini (as Bill Ontiverous)
Dirty Harry Officer
DMV Clerk
'Mouse' Woman
'Mouse' Spouse (as Richard E. Arnold)
Jerry Seville
Stuart
Billers
Librarian
Woman in Kitchen
Sighting Man
Screaming Woman
'Big Gun' Man (as Michael Loggins)
Bicycle Man
Sgt. Bader
Press Woman #1
Press Man #1
Press Woman #2
News Anchor #1
News Anchor #2
News Anchor #3
News Anchor #4 (as Steve Sheppard-Brodie)
Police Officer
SWAT Officer
Vigilante
Pool Man
Guard
Jerome
Police Clerk
Kim Lee
Little Bigfoot (as Debbie Carrington)
Feet (as John F. Bloom)
Little Bob
Harry (voice)
Schwarz
Police Officer (uncredited)
Boy #2 (uncredited)
Sporting Goods Store Customer (uncredited)
Baby Bigfoot (uncredited)