Thor: Ragnarok - 7 Predictions For The Huge Surprise

2. Hulk Turns Bad

The most interesting thing about Hulk's involvement in Thor: Ragnarok is not that he can talk, or that we're finally getting to see some of the Planet Hulk storyline, it's that Marl Ruffalo and Kevin Feige have confirmed that Ragnarok actually kicks off a compelling arc for Hulk across his next appearances in a trilogy.

That suggests something big is coming for the Jade Giant, and the best thing would be for Marvel to follow more of the Planet Hulk storyline by having him fight with his former friends. It would be more likely at this stage that he'd be coerced into becoming an enemy - though The Grandmaster presumably manages it - or perhaps that Hulk's desire to remain "in charge" instead of Bruce Banner forces him to make a dramatic decision?

Alternatively of course, it could be that Hulk dies at the end (or is at least sent to the Underworld - where he battles Surtur) and that Infinity War involves the Avengers having to revive him somehow? That too would be a worthy shock.