After the battle, R2-D2 and C-3PO were the sole witnesses to the marriage of Anakin Skywalker and Padmé Amidala in Lake Country. After this Padmé gave ownership of R2 to Anakin while she kept 3PO.
TIL that as a wedding gift, Anakin gave C3PO to Padme and Padme gave R2-D2 to Anakin.
R2-D2 was part of the repair crew for the Naboo Royal Starship. He technically is owned by Naboo's elected royalty until Padme took him along for her senator duties. By the Clone Wars, Padme gave him to Anakin as she felt a droid like R2 was far more useful to aid Anakin.
R2-D2 in the Prequels
He first met his future counterpart, the protocol droid C-3PO, when the ship made an emergency landing on Tatooine. When Padmé Amidala became a senator, she took R2-D2 with her. She later gave the droid to her husband Anakin Skywalker after he became a Jedi Knight.
On them, we learn that R2D2 was Anakin's personal droid during the war, and a droid had he trusted so much he wouldn't even wipe the memory, something he was admonished by Obi-Wan for.
After the battle, R2-D2 and C-3PO were the sole witnesses to the marriage of Anakin Skywalker and Padmé Amidala in Lake Country. After this Padmé gave ownership of R2 to Anakin while she kept 3PO.
R2-D2 was present when Padmé gave birth to Leia and Luke, so he knew Luke was Anakin's son – but what he didn't know was that Anakin became Darth Vader. In addition to that, Anakin's fall was surely a painful event in R2-D2's life, one that he definitely wouldn't like to remember or even talk about.
However, when Palpatine destroyed the Republic, Panaka sided with him. Though he never acted against Padme, his support of Palpatine included the support of a stronger military presence, which was a betrayal of her ideals.
Further in Empire Strikes Back, neither Yoda nor Darth Vader recognizes either droid. Luke travels with R2-D2 to the Dagobah where they find Yoda.
Sabé is the most important of Queen Amidala's royal retinue of handmaidens. During crisis situations, Sabé and Amidala switch roles. Sabé becomes a decoy, disguised as the Queen, while Amidala adopts a simple gown of a handmaiden, and goes by her less formal name of Padmé Naberrie.
A wily crime lord and member of the shadowy Hutt Council, Gardulla was the original owner of Shmi and Anakin Skywalker, but lost them betting with the junk dealer Watto.
During the Clone Wars, it was common practice to wipe the minds of astromech droids after every mission to avoid the risk of Separatists taking valued information. But Anakin remained staunchly against this idea for R2-D2, meaning the droid never had to worry about losing the memories of his past.
C-3PO returns in Star Wars: Episode I – The Phantom Menace, the first chapter of the Star Wars prequel trilogy, where it was revealed that nine-year-old slave Anakin Skywalker (Jake Lloyd) built him out of spare parts.
While never mentioned by name in the films, Sabé is one of the handmaidens most well-known to fans given her prominent status as the decoy queen in The Phantom Menace.
Keira Knightly had no idea who she played in the Star Wars franchise. The actress played the part of Sabé in 1999's The Phantom Menace when she was 12 years-old. The character is a very important handmaiden and body double for Natalie Portman's Queen Padmé Amidala.
Affiliation(s) Padme Amidala was a genetic clone of Senator Padmé Amidala. She was created by the Confederation of Free Planets in 7 ABY. She was a Senator in the senate.
R2-D2 has probably seen more action than all of the sequel characters put together, and has met a long list of Jedi from across time, including master Yoda. R2-D2 has even carried out special missions for the Jedi Council.
The base assumption of why Obi-Wan doesn't remember R2-D2 -- in light of the prequels -- is that Obi-Wan is feigning ignorance in A New Hope to downplay the importance of the droid's arrival.
However, Leia's strong-mindedness during Vader's probe denied him the opportunity to discover she was his daughter. That serves to justify Vader's lack of awareness of his connection to Leia, although, perhaps, not as satisfyingly as if Lucas had planned for the relationship from the beginning.
Anakin does not have even the slightest bit of remorse. By the end, he feels nothing but anger. Although he feels regret for killing Padme, he still helps the evil Emperor. The film ends with Anakins standing side by side with the man on whose behalf he has committed all his crimes.
What Padmé knew about Anakin's previous dark deeds. Padmé was well aware that Anakin had committed dark crimes that would've started his fall to the dark side. He even confessed to her that he had massacred an entire Tusken Raider village to avenge his mother, leaving no one alive.
Did Padme ever cheat on Anakin? No. As explained above, Padme did not cheat on Anakin with either Obi-Wan Kenobi or Rush Clovis.
There is no evidence that he remembered Obi-Wan. He may have been looking for Obi-Wan because Leia added it to his programming while loading the message, but didn't have any real memories of Obi-Wan from before.
The two droids were dumped back on the streets, their memories wiped of the incident. Unlike R2-D2, Threepio's mind is wiped of all memories after the birth of Luke and Leia.
However, R2-D2's memory is not wiped; as a result, R2-D2 is the only surviving character at the end of the saga who knows the entire story of the Skywalker family. Both R2-D2 and C-3PO end up in the possession of Captain Raymus Antilles (Rohan Nichol) onboard the Tantive IV.