Avengers: Infinity War - Every Character Confirmed So Far

Confirmed By: Actress Pom Klementieff took to Instagram to all but confirm she's in Infinity War, neglecting the need for anyone to officially confirm she's involved. Also, she's obviously not going to be killed off in Guardians Of The Galaxy Vol 2 now, is she?

Plot Predictions: Right now, it's pretty unclear what she'll be doing, other than the vague allusion that the Guardians Of The Galaxy are bound to turn up to help in the fight against Thanos. Since she'll likely be a fully fledged member by then, that might be all we'll get specifically.

But, Klementieff also posted the cover of an infamous Avengers comic in which it is revealed that Mantis is the daughter of villainus Zodiac member Libra (though he turns his back on the group in loyalty to his daughter). Could that be a hint that her backstory will be revealed more when she meets the Avengers as in the comic? Or was it just a coincidental post?