Yes he is indeed the same person. Palpatine, a native of naboo, is the Dark Lord of the sith, was an apprentice of Darth Plagueis. Palpatine is his family name, while Darth Sidious is the name given to him by his master. Likewise, people ask, was Vader and Palpatine friends?
Absolutely not (on both counts.) Anakin Skywalker assumed Palpatine was his friend and confidant, but that was purely by Palpatine's design. Palpatine saw friendship and attachments as a flaw; a weakness that enemies could exploit (which is exactly what he did to Anakin.)
Subsequently, question is, did Sidious care about Vader? Originally Answered: Did PALPATINE care about Lord Vader? Absolutely not! Caring was unbecoming and unexpected of a sith lord, much less THE most powerful dark side user in the galaxy at the time. The rule of two required there to only be one sith master and apprentice at any given time.
Moreover, did Vader ever fight Palpatine?
As Darth Vader, no. But as Skywalker, the only other time would have been when he threatened to reveal Palpatine to the Jedi Council. If Vader had even tried to defeat Palpatine, all it would take is a few bolts of Sith Lightning and Vader would be gone anyway.
Did Palpatine actually care about Anakin?
Palpatine did not care for Anakin in the same way Obi-wan did. Palpatine only saw Anakin as a means to an end. He did sound genuinely concerned for Anakin, for one brief moment. But that's it.
Related Question Answers
What did Palpatine think of Vader?
Palpatine was totally incapable of love or compassion. He was only concerned about restoring Anakin as best as possible and then using whatever power Anakin had solely for the Emperor's benefit. Palpatine believed that with Vader in this more weakened condition, he would also be more easily controlled. Is Palpatine Anakin's father?
Anakin's father is The Emperor. Palpatine manipulated the Midi-chlorians inside of Shmi's womb to create Anakin. When Palpatine tells Anakin about Darth Plagueis the Wise, this was the point where fans began to believe that Palpatine may be Anakin's father. Was Palpatine disappointed in Vader?
Yes he hated Vader. Because Vader was unworthy, weak, impure, ruined. Even if Vader had still a fully functioning physical body, Palpatine would hate him. He HAS to hate him. Why does Palpatine call Vader friend?
Why does Palpatine call Vader his 'friend' in RoTJ? Because he is his friend. We've seen extensively in the new canon that Vader and the Emperor have a toxic relationship, Palpatine groomed Anakin since he was a young boy (try not to read into that), and manipulated his fall to the dark side. Are KYLO Ren and Rey related?
Rey is Han Solo and Leia's daughter. Another big theory is that Rey is the daughter of Han and Leia, making her Kylo Ren's sister. Are Palpatine and Padme related?
When you consider the short period of time involved and the way in which humans tend to socialize with one another, there's the very real possibility that Padme (and by extension Luke and Leia) was a distant cousin of Palpatine. What did Palpatine think of Padme?
Palpatine exuded an opinion of Padme that she was like the daughter he never had, expressing remorse when he thought she'd been assassinated, fear and concern when she did anything reckless (like going back to Naboo to lead the counter-attack on the Trade Federation), and pride when she transitioned from Queen to Did Sidious care about Maul?
It may have appeared like it in some cases, but in reality, Sidious never really loved Maul. Although Maul survived his debacle on Naboo and tried to return to his master, Sidious had no intention of letting Maul return to him and considered him a rival, letting Maul roam around the galaxy on his own. Does Darth Vader get laid?
[Star Wars] Does Darth Vader ever have sex? No, he does not. it's uh, not an option for him. his bits got burned off is what i'm saying man. Who killed Vader?
Darth Sidious
Did Darth Vader kill Padme?
Obi-Wan informs Padmé that Anakin has fallen to the dark side of the Force and, as Palpatine's new Sith apprentice Darth Vader, killed everyone in the Jedi Temple, including children. Why did Darth Sidious kill Darth plagueis?
Palpatine explains that Plagueis could prevent people from dying and "create life" through a special Sith power of The Force, unknown to the Jedi. Despite being able to prevent others from dying, Plagueis is killed in his sleep by his own apprentice. How did Vader kill Palpatine?
Enraged, the Emperor attacks Luke with Force lightning. Unable to bear the sight of his son in pain, Vader, renouncing the dark side to become Anakin Skywalker again, throws the Emperor into the Death Star's reactor, killing him. How did Darth Maul survive?
Thought dead, Darth Maul survived his injuries by focusing on his hatred of Obi-Wan Kenobi, the Jedi who cut him in half. His shattered body was dumped amid the refuse of the junk planet Lotho Minor, where the once deadly warrior fell into madness, staying alive on a diet of vermin. How did Palpatine die?
Palpatine is killed by a blaster shot fired by Han, but his spirit is captured by the mortally wounded Jedi Empatojayos Brand. When Brand dies, he takes Palpatine's spirit with him into the netherworld of the Force, destroying the Sith Lord once and for all. Why did the Emperor want Luke to kill him?
That whole “strike me down” routine is actually what Palpatine was doing in Return of the Jedi, when he taunted Luke Skywalker to kill him in hatred. He wanted this to happen so that he could possess Luke's body. But when Luke tried to strike Palpatine, Darth Vader immediately stepped in to protect the Emperor. How does Palpatine return?
After his death in the second Death Star at Endor, Palpatine somehow relocates to the Sith world of Exegol, where he set into motion the events of the new trilogy. We are to assume that his human body was destroyed in the collapse of the new Death Star. 
