Charlie Hunnam will not be back for Pacific Rim 2.
Hunnam, who starred in the first Pacific Rim movie as Gypsy Danger Jaeger pilot Raleigh Brackett, let it be known at this past weekend's Comic-Con he won't be returning for the sequel due to a scheduling conflict. Hunnam says he is happy they are making the movie and even offered he was featured heavily in an earlier script (via yahoo):
They have a very definite schedule that they have to film because of the, you know, politics and business surrounding filmmaking. Sometimes non-creative decisions will dictate how something, you know, unfolds -- which seems bass-ackwards, in fact, that we're making art, or at least aspiring to make art -- but yeah, it just ended up being something that unfortunately we couldn't remedy..."
Hunnam goes on to say he feels Pacific Rim 2 will be a significant progression from the first movie, which is something you always hope to do.
Regarding the new star of Pacific Rim 2, that would be Star Wars: The Force Awakens actor John Boyega, who is playing the son of Idris Elba's character. Scott Eastwood is also in talks for a role.
Pacifc Rim 2 has a February 23, 2018 directed by Daredevil showrunner Steven S. DeKnight.