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