Nine-year-old Anakin Skywalker made C-3PO from scrap parts collected in a junkyard to help his mother Shmi around their slave hovel in Mos Espa, Tatooine. Having just met, C-3PO and R2-D2 work closely together to help perfect Anakin's Podracer which, in winning the Boonta Eve race, will earn Anakin's freedom.
C3PO was clearly created from some sort of kit or existing prototype since every protocol droid aside from coloring looks the same. He didn't recognize him because again, they all look the same & it was decades until he saw him again. There was no reason to believe he or R2 even existed anymore.
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.
Serving Padmé Amidala. R2-D2 repairing the shield generator of Queen Amidala's Royal Starship. R2-D2 was built around prior or during 32 BBY. He was one of several astromech droids on Queen Padmé Amidala's Naboo Royal Starship during the invasion of Naboo by the Trade Federation that year.
R2-D2 (/ˌɑːr. tuːˈdiːtuː/) or Artoo-Detoo is a fictional robot character in the Star Wars franchise created by George Lucas. He has appeared in ten of the eleven theatrical Star Wars films to date, including every movie in the original trilogy, prequel trilogy, and sequel trilogy.
In the year 3 ABY, Fett saved Vader's life from an assassination attempt. In the aftermath of the battle, Vader revealed to Fett his true identity: Anakin Skywalker, and his past with the Jedi Order. It was here where Fett learned of the fate of Mace Windu, and how Vader had killed him.
Return of the Jedi establishes that Yoda was aware that Anakin Skywalker had fallen to the dark side and become Darth Vader. When questioned by Luke Skywalker, he confided that Anakin was Darth Vader. Later, Obi-Wan Kenobi's Force ghost confirmed that Anakin had indeed fallen to the dark side and become Darth Vader.
Throughout the three years of the Clone Wars, R2-D2 was Anakin's loyal helper and sidekick. In a daring rescue of Supreme Chancellor Palpatine, R2-D2 served as his master's assistant in his Jedi starfighter.
Vader himself saves Threepio from destruction in the final pages of Marvel's Star Wars, before the series gets a relaunch taking place after Empire Strikes Back.
They aren't abbreviations — they're model and serial numbers. R2 is a second generation R-series astromech, serial number D2. * And C-3PO is a C-series protocol droid with the serial number 3PO.
But Anakin remained staunchly against this idea for R2-D2, meaning the droid never had to worry about losing the memories of his past. As a result, R2-D2 could learn the value of intelligence, quick thinking and when and where not to speak up.
After C-3PO and R2-D2 landed on Tatooine, Jawas picked up the two droids, fitting them with restraining bolts. The Jawas sold the robots to Owen and Beru Lars and their nephew Luke Skywalker, a seemingly minor event that would change the fate of trillions in the galaxy.
After the Clone Wars, however, Brooks Propulsion Devices, the company responsible for the development of his boosters, was shut down, and his rocket boosters were eventually damaged and thus could not be repaired. Despite this, however, R2 hardly regretted the loss of his ability to fly.
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. That explanation holds the most water for a number of reasons.
Darth Vader acts like he doesn't even know C-3PO or R2D2. They were with him since he was a child. He did everything he could to forget his past. Also, his plating had been replaced many times, and protocol droids all look very similar.
Although C-3PO is a tell-all, it's possible that he was directly programmed not to say who Leia is. This is something that George Lucas himself suggested in an interview back in the 1970s, which made it into the book The Making of Star Wars: The Definitive Story Behind the Original Film.
Darth Vader didn't learn he had a daughter until Return of the Jedi, when he stood before Emperor Palpatine. The Emperor's power probed Luke's mind, attempting to goad him to fall to the dark side, and he discovered Leia's existence. "Sister," the Emperor taunted.
