Thor: Ragnarok is going to feature a bunch of new characters and a bunch of new locations. However, there are some familiar faces in there as well but we haven't seen some of them. Jaimie Alexander's Lady Sif, Ray Stevenson's Volstagg, Tadanobu Asano's Hogun and Zachary Levi's Fandral have all been absent from the marketing and trailers so far. During a set visit Screen Rant asked if we were going to learn the fate of the Warriors Three and Sif.
It sounds like we're not seeing Sif and the Warriors Three, but do we learn what happened to them?
"Um… That's not necessarily the case. And yes."
With Loki on the throne of Asgard pretending to be Odin the Warriors Three and Sif could be a problem. They were a huge reason why his plan failed in the first movie. If they found out about his deception they would have to be taken care of. They could be a casualty during Hela's (Cate Blanchett) attack on Asgard. At least the movie plans on addressing what happens instead of just leaving their fates unknown.
Summary: Imprisoned, the mighty Thor finds himself in a lethal gladiatorial contest against the Hulk, his former ally. Thor must fight for survival and race against time to prevent the all-powerful Hela from destroying his home and the Asgardian civilization.
Thor: Ragnarok, directed by Taika Waititi, stars Chris Hemsworth, Tom Hiddleston, Cate Blanchett, Jeff Goldblum, Idris Elba, and Mark Ruffalo. It will be released on November 3rd.