Kylo Ren (portrayed by Adam Driver) is the main antagonist of the sequel trilogy, first appearing in Star Wars: The Force Awakens. Kylo will appear in all of the sequel trilogy films with Driver reprising the role.
Fictionally, Kylo is the son of Han Solo and Leia Organa, born Ben Solo. Born force-sensitive, he is trained by his uncle and Jedi Master Luke Skywalker until he is seduced to the Dark Side by Supreme Leader Snoke, joining the First Order and destroying Luke's new generation of Jedi. Kylo hunts down the BB-8 droid containing a piece of a map to Luke so that he can kill his uncle and finish off the last of the Jedi. Kylo's struggle of fear he won't be stronger than his grandfather Anakin leaves him conflicted. When Finn, Han and Chewbacca participate in rescuing Rey from the Starkiller Base, Kylo is outmatched in the force by her and later murders his father in order to eliminate the Light Side of his confliction.