Após o sucesso de Correr ou Morrer e a data de estreia de Prova de Fogo, o site Hollywood Reporter anunciou dois atores que integrarão o elenco do segundo filme. Confira:

We continue our trend of hiring great actors to join our maze runner family. Happy to have Rosa on board! She's gonna be BADASS!
— Wes Ball (@wesball) October 1, 2014

Well I guess it's out now. Aidan Gillen is playing Janson (aka Rat-Man) in the sequel. He was my first choice, so I couldn't be happier.
— Wes Ball (@wesball) September 26, 2014