In The Last Jedi, Kylo was tasked with eliminating Rey in Snoke's royal chambers ... Kylo immediately begins belittling Hux and asking for a throne to be built. His ego was in full swing.
after his duel with Rey in The Last Jedi. He stakes his claim to the throne of the First Order by pulling both halves of a severed Snoke from two different boxes and throwing Snoke's two parts ...