Last month, "Star Wars" fans got to know the newest characters in the franchise as Daisy Ridley, John Boyega, and Adam Driver made their debut as Rey, Finn, and Kylo Ren in "Star Wars: The Force Awakens." The film signals the beginning of a new trilogy which will focus on the new characters. But while fans have watched and re-watched the movie, many questions about some of them were left unanswered as many are still wondering who Rey is.

In the movie, it was revealed that Kylo Ren is Princess Leia and Han Solo's son who was lured by the Dark Side. But Rey is a complete mystery, as she was introduced as a scavenger in the beginning of the film. Later, it was revealed that just like Ren and other Jedis, Rey has the Force and appears to be more powerful and in control of it than Ren, who was trained in the ways of the Jedi as a child before he went over to the Dark Side.

While the film's stars and director J.J. Abrams have been freely talking about the movie and have even revealed some choice spoilers explaining some of the film's key plots, they have kept mum about Rey's identity, suggesting that this could be a big part of upcoming installments. Since last month, fans have flooded the Internet with theories regarding the heroine's identity, and one of the most persistent ones is that Rey is Luke Skywalker's (Mark Hamill) daughter.

At the end of "The Force Awakens," Rey was able to locate Luke, who has been off the grid for many years. Screenrant points out several clues that hint at Rey's parentage, starting with her conversation with Maz Kanata where she was told not to return to Jakku because whoever she's waiting for is never coming back.

"But there's someone who still could," said Kanata, to which Rey responds, "Luke."

Another popular theory is that Rey is actually Kylo Ren's sister. This particular theory echoes the plot of the original "Star Wars" trilogy, where Princess Leia and Luke Skywalker didn't know that they were siblings at the beginning of the story. There are also those who claim that Rey is Obi-Wan Kenobi's granddaughter, as this could also explain where she got the Force, since the second "Star Wars" trilogy movies explained that the Force can be passed down from a parent to his or her child.

Abrams was asked about the numerous theories regarding Rey's identity at the TCA Winter press tour. While he did not give any further details, he teased that he "knew quite a bit" and that he won't talk about it since the franchise is now in the hands of Rian Johnson, who will direct "Episode VIII."

"The last thing I'm going to do is reveal something that he would be upset about," said Abrams (via Variety). "I want to make sure that Rian gets the courtesy."