Klementieff was trained at the Cours Florent drama school in Paris and appeared in such French films as The Easy Way and Sleepless Night before making her way to Hollywood. She achieved worldwide recognition for  her role as Mantis in the Marvel films Guardians of the Galaxy Vol. 2, Avengers: Infinity War, Avengers: Endgame., Thor: Love and Thunder, and the anticipated Guardians of the Galaxy Vol. 3