Kylo Ren's obsession with Vader is clear, but Star Wars never explained how he acquired the helmet. It is speculated that he may have found it himself on Endor, or it could have been passed down to him by Supreme Leader Snoke.
From the Wookieepedia article on Darth Vader's armor: "The disfigured helmet of the infamous suit was scavenged from the funeral pyre,[6] and eventually found its way into the possession of Vader's grandson, Kylo Ren, a Force-sensitive dark side practitioner of the First Order."
How did Kylo Ren get the helmet of Darth Vader? Kylo Ren, while remaining anonymous, hired a bounty hunter to retrieve it from an ex Imperial stormtrooper named Jor Tribulus. Canon information states that Darth Vaders helmet was taken from his funeral pyre located on Endor in 4 ABY.
That is, until he duelled with Rey in a Force-connected lightsaber battle in The Rise of Skywalker, which saw the pair, who together make up a Force dyad, inadvertently destroy Vader's helmet.
It is revealed that Ren is the son of Han and Leia, originally named Ben, and was once one of Luke's Jedi pupils. He was corrupted to the dark side of the Force by the First Order's Supreme Leader Snoke (Andy Serkis), and helped destroy Luke's new Jedi Academy.
However, joining the Sith means declaring loyalty to the dark side, which Anakin did before his eyes turned yellow. This may explain why Kylo Ren, torn between the light and dark, didn't have yellow eyes in the Star Wars sequel trilogy, as killing his father split his spirit even more.
But this is actually a very sad reason because it actually had the opposite effect, and he deeply regretted his decision to kill his father and it haunted him for the rest of the trilogy. Also, Han was telling him that Snoke was using him, but one of the reasons he killed him was to impress Snoke.
On Malachor, Ahsoka Tano damaged Vader's helmet and thereby learned the truth of her former mentor, Anakin Skywalker. Three years prior to the Battle of Yavin, Vader engaged in a duel against his former apprentice, Ahsoka Tano, inside the Malachor Sith temple.
This occurred because Vader was not Luke's enemy in the Cave of Evil. Instead, Luke was fighting himself and his own fears, which Luke discovered when he saw his own face in Vader's helmet.
Inside his suit and mask, Vader has a series of needles in his skin. Unfortunately, these needles, which transmit neurological data throughout his body and allow him to control his limbs, also cause him constant pain.
The breaks in Ren's mask were meant to be a visual representation of his fractured character. Instead of hiding him as it did before, the mask tells his history, and his behavior is revealed. Tales of Villainy: Follow and Lead depicts Kylo Ren wearing his helmet between the events of Episode VIII and Episode IX.
Why does Kylo Ren punch his blaster wound during his lightsaber duel with Finn? To generate pain and thus adrenaline. The Dark Side of the Force feeds off of such things; anger, pain, fear. Earlier in the movie we'd seen Chewie blast some poor Stormtrooper and send him flying despite his armor.
The mask also represents the villain's fragility and, of course, his weaknesses, and that's why Darth Vader taking the mask off to Luke at the end of Return of the Jedi is so significant. He's showing his son who he really is, or the person he used to be: Anakin Skywalker.
There is also a series of tubes that run through his chest to his lungs and to his burnt-out throat, allowing him to breathe without this advanced system for a brief period should his life support take on severe damage. If he were to take his mask off, the Sith Lord would soon suffocate.
When rage and anger seethe inside a dark side user, their eyes may burn yellow with a fiery-red rim." What that means is a Sith's emotions will be shown through their eyes. A Sith's power level can also be determined when their "Sith eyes" are visible.
Kylo Ren's obsession with Vader is clear, but Star Wars never explained how he acquired the helmet. It is speculated that he may have found it himself on Endor, or it could have been passed down to him by Supreme Leader Snoke.
He was so clouded by the dark side and Palpatine's lies that he unknowingly walked away from his own family. To confirm that Vader had no clue during the trench run, the moment he finds out about his son is actually revealed in a comic.
Could be any number of reasons ranging from faulty surge protection anodes, to Starkiller and Palpatine having vastly different current frequencies and voltages in their force lightening.
Anakin Skywalker's birth mystery is solved - his mother, Shmi Skywalker, reveals that there was no father and she can't explain what happened. Qui-Gon Jinn believed that the Force itself created Anakin in Shmi's womb, making him the Chosen One who would bring balance to the Force.
Kylo Ren dies on Kef Bir (the ocean moon of Endor) shortly after Rey deals a mortal wound during a lightsaber duel on the wreckage of the second Death Star. Though Rey Force-heals him, saving his life physically, this blow, coupled with the memory of his mother and father, destroys the man known as “Kylo Ren” forever.
Ben hurried to Exegol and fought Palpatine alongside Rey. Rey destroyed the Sith Lord, but the effort left her dying. Making a sacrifice that recalled that of Anakin Skywalker, Ben gave his life to heal her. Redeemed by this selfless act, he then passed into the Force.
After he became Kylo Ren, he started to admire the power of his maternal grandfather Anakin Skywalker, but particularly in his Vader incarnation. His attachment to Vader makes him desire to uphold the Sith Lord's legacy by destroying all the remaining traces of the Jedi tradition.
