Emma Roberts Rex Simpson, Executive Producer
Gabrielle Union Pam Proctor
Dave Foley Rudolph Bolton
Tom Hopper Logan O'Leary
Kevin Downes Security Guard
Drew Powell Drunk Customer (Lucas)
Desi Lydic Dr. Stacy Kellogg
Shirley Roeca Dee Bellevue
Makia Martin Condemned Mansion Tourist
Joshua Harto Captain Elvis Popowski
Sam Robards Rex's Dad (Calvin Simpson)
Poppy Liu Nadine Cai
Neal Davidson Cold Water Dude
John Debney Original Music Composer
Michael J. Massimino Astronaut #1
Michael Tadross Executive Producer
Jon Berg Producer
Sebastián Yatra Toddrick Spencer
Kuhoo Verma Violet Marie Vislawski
Liz W. Garcia Director, Writer, Executive Producer
Aleksandra Stojanovic Foley Artist
Max Jenkins Miles the Med Tech
Greg Silverman Producer
Troy Iwata Hector Kaneko
Alli Brown Paris
John Inwood Director of Photography
Yasha Jackson Grace Jackson
Alexis Suarez Flight Captain
Caroline Concannon Rex Simpson - 8 years old
Glo Tavarez Kendra
Kimberly Pauley Guidance Counselor
Merritt Janson Departing Ascan
Allegra Heart Erin
Tómas Matos Johnny
Fergie L. Philippe Bingo
Josephine Huang Miriam Osprey
Andrew Call Captain Jack Mancini
Alyson Schacherer Tourist Mom
John Ahlin Gator Greg
Natasha Warner Rex's Mom (Tara Simpson)
Chris Bosco Executive Producer
Jaynalie Rios Space Camp Girl #3
Eddie A. Bryant Head of Security
Samira Sardella Space Camp Girl #1
Gideon Yu Astronaut #2, Executive Producer
Cooper Silverman Beach Partygoer
Les Ware Astronaut #3
Lori Kephart Production Assistant
Brennan Joseph Taylor Sweaty Ascan
Hailey Gaudenti Assistant Accountant
August Garcia-Harto Tourist Kid #2
Ollie Gregorio Space Camp Girl #2
Wilder Garcia-Harto Tourist Kid #1