Fans have been anticipating this moment for a while, and according to Entertainment Weekly's in-depth Star Wars cover story, The Last Jedi will reveal if Rey is Luke's daughter. Their relationship has been a hot point of debate among fans since The Force Awakens, and from the sound of it, you won't have to wait too long to receive answers about exactly how they know each other. The intriguing plot point was touched upon when Daisy Ridley was describing the fraught dynamics that fans will see between Rey and Luke in The Last Jedi.
With the actor confirming that Rey arrives on the island — not to become a hero herself, but to bring Skywalker back into the fight — it seems that the young character is placing gigantic expectations on Luke. One's that the actor revealed won't be enough. Ridley said told EW,
"I don’t think one girl, who he doesn’t know, turning up with a lightsaber is gonna make him go, ‘Oh, sh*t, yeah, of course I’ll get back into the action."
But the real telling reveal came from Mark Hamill regarding Luke and Rey's relationship. In a separate interview with the magazine, Hamill teasingly responded to Ridley's statement by saying, "But does he not know her?" So yeah. Prepare to freak out, you guys. A reveal is happening.
Obviously, there are a whole lot of clues that could be considered proof that Rey may be Luke's daughter. On Reddit, an in-depth exploration of the Rey is Luke's daughter theory by a user named con0rr provided an exhaustive list of potential evidence. There are obvious parallels, such as both their backstories involving being left on desolate planets without knowing their families, and their shared command of the force that's instinctive and powerful without any training.
However, there also appear to be a lot of subtle clues that hint at the theory, too. There's the fact that the lightsaber called to her, and even flies to Rey in The Force Awakens final battle. There's the way that Luke appears to suggest a shared, familial connection in The Last Jedi's trailer when he says, "I have it, my sister has it... you have that power too." But, perhaps most interestingly, there's Maz Kanata's hint, "The belonging you seek is ahead."
That last one is interesting because from what we know about The Last Jedi so far, Rey doesn't sound as though she finds that sense of belonging with Luke. Instead, as Ridley put it in the Entertainment Weekly story, Rey is left thinking, "Oh my God, this other man that I lost within a couple days was somewhat of a father figure. Now he’s gone, and instead I’m with this grumpy guy on an island who doesn’t want me here."
If you consider this alongside Hamill's vague suggestion that Luke does know Rey without implying how, then it could be that Rey is the daughter of someone else entirely — perhaps someone who still shared a close bond with Luke.
Another theory that has remained prevalent, for instance, is that Rey is the daughter of Han Solo and Leia Organa. In turn, that would make her a secret sibling of Kylo Ren. As Cinema Blend points out, there's a fair chance that Rey was hidden on Jakku for safety as a baby, following Kylo Ren's murderous turn to the Dark Side. It would definitely explain the immediate connection between Han, Leia, and Rey, and Kylo Ren's recognition that there's something special about her.
However, it also seems plausible that Rey could be directly related to Obi-Wan Kenobi, which is another theory that has been floated around by fans. One that makes sense when you connect the dots concerning her delightful discovery of Jedi mind tricks in The Force Awakens, and why Luke's lightsaber called to her (since Obi-Wan possessed it for longer).
Or it could be that Hamill is simply giving Star Wars fans enough fuel to keep their theory engines revving loud and excitably until The Last Jedi. But frankly, as a set of movies known for its tremendous twists and continuously complicated family dynamics, it would be of surprise to nobody if one of these theories came to fruition in The Last Jedi. Hurry up and get here, Dec. 15. Fans need answers.