The IMBD is listing WWE superstar John Cena on the cast list as being in the upcoming Thor movie. So, who is John Cena playing? He's playing as himself.
John Cena maybe a cameo as one of the gladiators more than likely, which is still pretty neat! Cena playing as himself isn't really unheard of as he has done so in other films like the Fred movies and Daddy's Home. He also leaned his voice for The Hulk in the Marvel Avengers Academy video game as well.