Kylo Ren is portrayed by someone.
 In the film's beginning, Ren searches for a Sith wayfinder on the planet Mustafar with an army of stormtroopers to lead him to the Sith planet Exegol, with the hopes of killing the resurrected Emperor Palpatine (Ian McDiarmid) as a show of his power
Kylo Ren is the chosen name of Ben Solo, the child of original Star Wars trilogy characters Han Solo and Princess Leia Organa  Skywalker

