Cailee Spaeny Will Be Female Lead In PACIFIC RIM Sequel Variety is reporting that newcomer Cailee Spaeny will be the female lead for Legendary's upcoming sequel to their 2013 sci-fi film, Pacific Rim.She joins a cast lead by John Boyega who is set to play the son of the character played by Idris Elba from the first film and Scott Eastwood in an undisclosed role.Steven S.