- Why was Luke allowed to keep the last name “Skywalker” if he was supposed to be in hiding? Perhaps Anakin’s victory in the Boonta Eve podrace became something of a local legend, and so it became fairly common for human residents of Tatooine to adopt the name, meaning nobody would suspect Luke was actually a Skywalker.
My headcanon is that Luke didn’t know his real last name until Obi-Wan told him and the first time he used it was when he stated “I’m Luke Skywalker, I’m here to rescue you.”