Heavy spoilers for “Obi-Wan Kenobi’s” fourth episode follow! Turn back now if you haven’t watched!Obi-Wan (Ewan McGregor) is injured and clearly out of it after his battle with Darth Vader (Hayden Christensen, with help from James Earl Jones and an AI voice generator). He’s badly burned and in rough shape. Tala (Indira Varma), the Imperial higher-up turned Rebel leader, is rushing him to a Rebel base.