Above all, Darth Vader's mask enables him to breathe through a series of devices. If he took his mask off, Vader would rapidly suffocate and die. Additionally, all its other enhancements would fail, compromising many if not all his primary senses.
Vader's mask was one of the most important pieces of Vader's armor, and was vital to his survival. Without it, he would die unless in the pressurized, controlled atmosphere of one of his specially-made meditation chambers.
Would Vader have survived if he didn't take his mask off?
If he were to take his mask off, the Sith Lord would soon suffocate. So it's the most crucial part of his armor. He can only breathe without the need for his mask when he is in one of his meditation chambers seen in The Empire Strikes Back.
So, in movies 1–6 as well as the Legends books, the reason he couldn't clone limbs or regenerate: No regeneration tech is available, they don't have that ability.
Why Kylo Is Now AFRAID of Darth Vader’s Mask – Star Wars The Last Jedi Explained
Did Vader feel pain in his suit?
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.
Vader constantly experiences excruciating pain due to the suit's design. Though he once perceived it as one of the suit's major downfalls, he later came to embrace it as it fueled his rage, allowing him to strengthen his connection to the Dark Side.
Even though Luke tried his best to protect him, Anakin accepted his fate and expressed his love for his son and daughter, Leia, whom he learned about before dying. While it seemed like Anakin had lived a long life, his choices eventually led to his demise at 45.
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.
Darth Vader may have been able to do this due to the way that his mask was cut and the influence of the light side of the Force. One reason Darth Vader could speak with Anakin's voice was that he could talk without the mask.
And while the suit did keep him alive, it also hindered Vader's abilities and potential as a Force-user. But unknown to Palpatine, this decision would result in his demise. Darth Vader was still undoubtedly powerful, and the suit made him more intimidating than Anakin could ever be. But the suit also limited his power.
While the former Jedi Knight's aversion to sand has been a running joke to Star Wars fans for years, Star Wars: Darth Vader #26 added a tragic new dimension to Vader's hatred of seemingly harmless mineral particles by tying it to the all-consuming fear of loss that led him down the path of the Dark Side.
Darth Vader's loss of limbs prevents him from using force lightning, a common ability among Sith, making him weaker in comparison. Vader's reliance on his mechanical suit weakens him in battle, reducing his agility and mobility from his days as Anakin Skywalker.
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.
In "Return of the Jedi", Darth Vader is seen shedding tears during the final confrontation between him, Luke Skywalker, and Emperor Palpatine. This moment occurs when Vader witnesses his son, Luke, being tortured by the Emperor's Force lightning, and he is torn between his loyalty to the Emperor and…
The helmet was designed to look sinister; as a Knight of Ren, Ren was part of an enclave of dark side warriors who wore masks to induce fear in their prey. Ren's helmet was a symbolic reminder of his lineage as Darth Vader's grandson, serving no practical use in his life.
8 Darth Vader's Armor Was Heavy Enough To Bring Him To His Knees. Darth Vader weighed 120kg (264 lbs), and most of that weight is because of the armor's steel and obsidian components.
In the main Star Wars timeline, of course, Darth Vader's attempts to resurrect Padmé on Mustafar were doomed to failure. But it's fascinating to speculate what would have happened had he been successful. In that scenario, Padmé Amidala's return from the dead would not have provided the solace Darth Vader sought.
After becoming Darth Vader, Anakin abandons his compassion for the clones and treats them as mere tools, showing no remorse or second thoughts when killing them.
