Milo Coy
Stan
Acting
Jack Black
Grown Up Stan (voice)
Acting
Lee Eddy
Mom
Acting
Bill Wise
Dad
Acting
Natalie L'Amoreaux
Vicky
Acting
Josh Wiggins
Steve
Acting
Jessica Brynn Cohen
Jana
Acting
Sam Chipman
Greg
Acting
Danielle Guilbot
Stephanie
Acting
Zachary Levi
Kranz
Acting
Glen Powell
Bostick
Acting
Larry Jack Dotson
Grandfather
Acting
Mona Lee Fultz
Grandmother #1
Acting
Jennifer Griffin
Grandmother #2
Acting
Holt Boggs
Sam The Rocket Man
Acting
Reese Armstrong
Tony
Acting
Natalie Joy
Music Class Teacher
Acting
Suzanne Deal Booth
Science Teacher
Acting
Chris Olson
Principal Cowan
Acting
Samuel Davis
Pinball Buyer
Acting
Mia Gonzalez
Statue-Maker Kid
Acting
Brian Villalobos
Bales
Acting
Chris Zurcher
Jack
Acting
Alex Fink
Kid on Astroway
Acting
Zia Kinzy
Young Lady on Astroway
Acting
David DeLao
Mr. St. George
Acting
Noah Randall
Drive-In Employee
Acting
Athena Wintle
Mindy
Acting
Xavier Patterson
Emanuel
Acting
Nick Stevenson
SIMSUP
Acting
William Carroll
Abominable Snowman
Acting
Avery Joy Davis
Lisa (uncredited)
Acting
Christian Moran
Hoodlum (uncredited)
Acting
Nicholas Andrew Rice
NASA Controlman (uncredited)
Acting
Keslee Blalock
AstroWorld Kid (uncredited)
Acting
Brent A. Riggs
Service Station Attendant (uncredited)
Acting
P. Michael Hayes II
SIMSUP (uncredited)
Acting
Flint Nattinger
Laughing Boy (uncredited)
Acting