Emperor Palpatine, also known as Darth Sidious, did not have any known children in the Star Wars canon. Who did Palpatine have a kid with? In current canon, as far as we know, Palpatine never procreated naturally. According to the Rise of Skywalker novelization, his “son”, Rey's father, was a clone of Sheev.
Rumor had it that his mother was Palpatine's Umbaran aide Sly Moore, who had impregnated herself using DNA from an undisclosed source. Regardless of the veracity of that report, Triclops was regarded as the true son of Palpatine, both by himself and the few high-ranking officials who were aware of his existence.
We know for a fact that Sheev Palpatine, Darth Sidious himself, had one son. Whether biological or the result of cloning, this son seemed to be a complete unknown to viewers and the galaxy until The Rise of Skywalker.
Rey was born on Hyperkarn in 15 ABY during the rise of the New Republic. Her father, Dathan, was a bioengineered Strand-Cast cloned from the genetic template of Darth Sidious, the Sith Lord who ruled the Galactic Empire as Emperor Palpatine.
Rey is Ezra Bridger's Daughter
A new theory has been proposed by Reddit user Darth Hodor, and it's one that ties into the ongoing Star Wars Rebels cartoon series. Here's their idea: “Simply put, I think Benicio Del Toro is going to be Rey's father. … But that's not to say Del Toro will be playing a new character.
But a new tie-in novel, Shadow of the Sith by Adam Christopher, finally fixes this. Rey's parents are none other than Dathan and Miramir. No, that's not a typo. Her dad's name is Dathan, which is at least slightly better than Sheev Palpatine.
At the end of Star Wars: The Rise of Skywalker, Rey visited Luke's childhood home on Tatooine. While on the planet, when someone asked her who she was, Rey responded by saying that she was "Rey Skywalker." Although she wasn't related to them, both Luke and Leia had been mentors to Rey throughout the sequel trilogy.
What is the connection between Kylo Ren and Rey? As Kylo Ren himself says in The Rise of Skywalker, he and Rey are bonded not just by their familial legacies (Ren as the grandson of Darth Vader and Rey as the granddaughter of Emperor Palpatine) but by their unique connection in the Force.
Do Rey and Kylo have kids? She does not have a baby bump, her hand never goes to her stomach to indicate she's carrying a child, and there wasn't exactly any time for her to have conceived a child with anyone in the course of the film, including Kylo Ren/Ben Solo.
Having refounded the Jedi Order and trained several new Jedi including Leia, Luke eventually marries an enemy-turned-ally Mara Jade, and they have a son named Ben, who was voted the 40th top Star Wars character by IGN and the 6th top Star Wars Expanded Universe character by UGO Networks.
Having covertly turned Kylo Ren—Anakin's grandson and Luke's nephew—to the dark side, Palpatine orders Ren to find and kill Rey, the last remaining Jedi and Palpatine's paternal granddaughter. Palpatine is ultimately defeated and destroyed by Rey.
Kylo Ren is the chosen name of Ben Solo, the son of original Star Wars trilogy characters Han Solo and Princess Leia Organa Skywalker.
In addition, the supposed son of Emperor Palpatine, Trioculus, had been crowned, although it was left disputed as to whether it was valid. Emperor Palpatine's official heir would normally be Lord Darth Vader, as he was his Sith apprentice and the Supreme Commander of the Imperial Forces.
In The Art of Star Wars: The Rise of Skywalker, art director Rick Carter expressed his opinion that Rey was the one who fulfilled the prophecy rather than Anakin, stating that while that one would be a Skywalker, it didn't necessarily need to be one by blood.
Regardless of how favorable either of these decisions have been received, the canon has firmly established Rey as a Palpatine, but with her own chosen decision to carry on the Skywalker name instead.
Powerfully Force-sensitive, Rey trains to be a Jedi under siblings Luke Skywalker and Leia Organa, and faces adversaries such as Kylo Ren, Supreme Leader Snoke and the resurrected Emperor Palpatine—who is revealed to be her grandfather in The Rise of Skywalker.
Ben grabs fertility beads off of her neck through their bond. When Ben brings her back to life he places his hand over her womb. Kathleen at the LA premier said 'they could always being the Skywalkers back' in future movies and Rey is calling herself a Skywalker and possibly pregnant with Skywalker twins.
Ben Solo is the love of Rey's life. Initially unknown to Rey, she forms a dyad in the Force with Ben. The dyad is an unbreakable Force-bond that makes them one in the Force, despite being born as two physically separated individuals.
There's no question that Rey and Kylo Ren shared a special relationship, but was it romantic? When Rey kissed Ben, who shed the identity of Kylo Ren upon his return to the light, at the end of The Rise of Skywalker, the act would seem to indicate that Rey loved Ben romantically.
“So Leia Force projects herself as Ben and uses her life force to save Rey. Even going as far as to kiss Rey to convince her it's Ben. It's why when Ben disappeared, so did Leia.”
A crystal embodies the Jedi as the heart of the lightsaber, and pure kyber has no color until it's bonded to the Force user. This process likely resulted in Rey Skywalker's lightsaber being yellow.
The mystery of Rey's parents was kept secret for years, and Star Wars actor Daisy Ridley revealed the original idea was to have Obi-Wan as her father. For several years, Rey's heritage was the biggest question within Star Wars fandom.
Snoke Wasn't Aware of His Own History
In fact, despite being created some time after the Battle of Endor, he believed to have lived through the rise and fall of the Empire.
In The Rise of Skywalker's novelization, written by Rae Carson, it's revealed that Rey's father is a failed Palpatine clone. He was initially created as a vessel to house the Sith Lord but proved incapable of doing so.
By the end of The Rise of Skywalker, Rey had become the last known Jedi of the Skywalker Saga.