Dylan O'Brien
Thomas
Kaya Scodelario
Teresa Agnes
Ki Hong Lee
Minho
Rosa Salazar
Brenda
Giancarlo Esposito
Jorge
Will Poulter
Gally
Jacob Lofland
Aris Jones
Patricia Clarkson
Ava Paige
Aidan Gillen
Janson
Walton Goggins
Lawrence
Dexter Darden
Frypan
Katherine McNamara
Sonya
Nathalie Emmanuel
Harriet
Barry Pepper
Vince
Dylan Smith
Jasper
Jake Curran
WCKD Lieutenant
Dylan Kriek
Co Conductor
Scot Cooper
Station Chief
Kazi Maubert
Immune Child
Bart Fouche
Engineer
Greg Kriek
Co-Conductor
Paul du Toit
Berg Pilot
Liza Scholtz
Nurse
Shai Lun Choo
Little Girl
Fiona Ramsay
Board Member
Paul Hampshire
Soldier
Nathan Barris
Soldier
Drikus Volschenk
Team Leader
Clayton Evertson
WCKD Operator
Emily Child
Infected Woman
Dale Jackson
Holding Area Guard
Armando De Leca
WCKD Guard
Paul Lazenby
Guard (uncredited)
Parm Soor
Board Member (uncredited)