Avengers: Infinity War - Predicting All 76 Characters
13. Drax (Dave Bautista)
Status: Confirmed
Drax obviously has previous with Thanos as he sees the Mad Titan as responsible for the death of his wife and daughter. So we can expect him to once more go into full berserker mode to show his enemy that he means business.
He's easily one of the most powerful characters in the entire movie, so we can also expect to see him in a key position on the front-line. And with Guardians Vol 3 upcoming, it's unlikely he'll be killed off. Hopefully.
12. Teen Groot (Vin Diesel)
Status: Confirmed
The Guardians Of The Galaxy Vol 2 post-credits sequences established that Teen Groot isn't the most motivated Guardians member, but once he gets going he's still going to possess all of the powers his full-sized predecessor had (minus some of the strength and compassion presumably).
Putting him too close to the action might be a little dangerous, but Spider-Man's involved so another strike for child-labour probably isn't going to matter at this rate. Let's hope we see more of Peter Quill playing the maternal role to him though, as that was great.
11. Mantis (Pom Klementieff)
Status: Confirmed
The least effective warrior in the Guardians team is coming along for the ride too after she joined the team from Ego's maniacal service. It's unrealistic to expect her to really do too much in Infinity War, but her powers of mental persuasion may come in handy and she may be the key to truly understanding Thanos' motivations if she can get close enough to touch him or one of his underlings.
She needs more backstory, but that's more likely to be revealed in Vol 3 rather than Infinity War or Avengers 4.