Noah Wilder
Emma Wilder
Jo Wilder
David Wilder
Larry White
Naomi Schwartz
Nathanial Broadman
Sheila Broadman (as Kirsten Williamson)
Teacher in Meadow
Harry
Kid with Braces
School Guard (as Scott Miller)
Wendy
Julie the Babysitter
Future Scientist
Future Scientist's Co-Worker
Armed Cyborg (as Samuel Polin)
Armed Cyborg
Technician
Utilities Commisioner
Stu
Police Captain
Newscaster
Dr. Rose
FBI Task Force Agent
CPS Officer
FBI Video Technician
Scientist
Intel Scientist
Army Officer
Teenage Cyborg
Child in Meadow
Kindergarten Teacher
Little Girl (voice) (uncredited)