The idea of Damon having a secret cameo in Thor: Ragnarok is quite unexpected by itself.
On multiple occasions, Waititi has said that Thor: Ragnarok is designed as a standalone film, meaning that fans can watch and enjoy the movie without having followed the Thor character’s story in Thor and Thor: The Dark World.
Bourne star Matt Damon has a secret cameo in the upcoming film, Thor: Ragnarok, according to a rumor that (of course) should be taken with a sizable grain of salt.
Directed by Taika Waititi, Thor: Ragnarok is the third solo outing for the God of Thunder.