Pom Klementieff

Guardians of the Galaxy actress hints that Mantis will be in Avengers: Infinity War
Jan 30, 2017

The character of Mantis won't be introduced until Guardians of the Galaxy Vol. 2, but actress Pom Klementieff has more or less confirmed she will return for Avengers: Infinity War.

Guardians of the Galaxy Vol. 2 just added a major female character from the comic canon
Oct 30, 2015

James Gunn has been teasing a bigger cast in Guardians of the Galaxy Vol. 2, and now it sounds like he’s eyeing a major female comic character to round out the roster.