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