Guardians Of The Galaxy Vol. 2 Main Trailer: 10 Things We Want To See
4. Mantis
The Guardians lineup isn't changing too much for the second instalment, with all of the originals returning, but there is going to be a new addition in this movie: Mantis, played by Pom Klementiff.
Mantis possesses empathic powers, is a highly-skilled martial artist, and was raised by Ego (Kurt Russell's character). Chances are the Guardians will meet her at or around the same time they do Ego, before she then joins them in whatever their mission is/becomes.
Mantis didn't appear in the teaser, so it'd be good to see her in action in the full trailer. It'd give audiences a soft introduction to the character, and a scene-stealing turn would help build a lot of hype for her appearance in the movie.