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