Is THAT what beep boop means? As it turns out, the fact that R2-D2 curses up a storm when he spits out those adorable little noises is actually canon in the world of "Star Wars." It was confirmed by a certain beloved Wookie actor, as well as in a comic book.
The language is “spoken” by droids such as R2-D2 and BB-8. In an early draft of the Star Wars script, R2-D2 speaks standard English.
C-3PO, his robot companion, could speak 6-million languages including excellent English with a hint of a British accent and all R2-D2 could muster were beeps and whistles. Clearly the technology was there to let him speak, but whoever designed him intentionally decided to stick with the beeps and whistles.
Most are quite intelligent, and some can even speak the human language, such as C-3PO. However, most droids, including R2-D2 and BB-8, "speak" a droid language through sequences of beeps and whistles. It is known as "Binary," and several humans in the Star Wars universe can understand it.
One of the most significant changes revealed on the official Star Wars website was that R2-D2 would have spoken English instead of emoting through various sound effects. This design choice would have meant that R2, much like his partner C-3PO, would have had a distinct voice that spoke in full and articulate sentences.
Wanna know how to say "I love you" in Droid? You guessed it: "Bleep bloop."
Revenge of the Sith
After Anakin falls to the dark side of the Force and becomes Darth Vader, he takes R2-D2 with him when he goes to assassinate the Separatist council, but tells him to stay with the ship.
The C1-series astromech droid utilized this form of communication, as did Industrial Automaton's R2 series astromech droid. While difficult, some organics such as Anakin Skywalker, Hera Syndulla, Kazuda Xiono, Cal Kestis, and Rey were able to understand it.
A new Star Wars canon novel confirms Yoda did recognize R2-D2 when the astromech droid arrived on Dagobah with Luke Skywalker. Star Wars confirms Yoda recognized R2-D2 on Dagobah in The Empire Strikes Back.
A droid that understood Basic might only be programmed to respond to the voice of its master, and by communicating exclusively in Binary, outside interference that might affect the droid's behavior or function could be limited during the conversation.
The ultimate secret of R2D2's emotive character is that sound designer Ben Burtt actually combined his own voice with the sound of the synthesizer to create baby-like wails and cries in addition to the computer-like sounds of the Arp. It's this unique combination that gives R2D2 its own organic life.
While Obi-Wan Kenobi seemed not to know R2-D2 in Star Wars: A New Hope, one theory argues that he recognized the droid but chose not to tell Luke. Despite acting as if he did not know the astromech droid, one theory holds that Obi-Wan Kenobi recognized R2-D2 in Star Wars: A New Hope.
He either didn't realize it was the same protocol droid or figured he'd been memory-wiped so FUNCTIONALLY wasn't the same droid and didn't care.
The Australian Magpie
It's a car alarm; it's a barking dog; it's R2-D2! Nope, it's actually an Australian Magpie. This eclectic songbird uses a variety of complex calls, and can mimic over 35 species of birds, as well as other animals, including dogs and horses.
Built by Anakin Skywalker, C-3PO was designed as a protocol droid intended to assist in etiquette, customs, and translation, boasting that he is "fluent in over six million forms of communication".
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.
Yes, he did. In the comic Thank the Maker, Darth Vader comes into possession briefly of 3PO's disassembled head while on Cloud City.
Other Characters That Can Understand Droids In Star Wars
Obi-Wan Kenobi was another human who could speak Binary, as well as Anakin, who shared the strongest relationship with R2-D2, as seen in the prequel trilogy and Star Wars: The Clone Wars.
Canon has established that Anakin, while brilliant, has a very flighty attention span and unless it's something that is deeply important to him or made glaringly obvious, his brain has a tendency to skip over it, and makes him less aware. Anakin and HYPERFOCUS: The flip side of ADHD focus issues.
The last members of the Order of the Sith Lords founded by Bane, Darth Sidious and his successive apprentices Darth Maul, Darth Tyranus and Darth Vader, were all capable of speaking Sith fluently.
Anakin Skywalker is the son of Shmi Skywalker, born without a father through the Force. He is the secret husband of Padmé Amidala, the father of Luke Skywalker and Leia Organa, the father-in-law of Han Solo, and the maternal grandfather of Ben Solo.
By claiming he's never owned a droid, he applies the same tactic as he did with his embellishment about Anakin. He hasn't owned a droid because R2-D2 is his friend. No one can "own" him, and to claim to have done so disrespects the countless ways the little astromech has saved the galaxy.
Perhaps, the old creature simply forgot. Late in the film, Darth Vader does not recognize C-3PO who is in Cloud City with Han Solo, Chewbacca, and Leia. Although C-3PO is not completely assembled in the scene, he is definitely visible to Vader.
As such, R2D2 appears to be the state property of Naboo. Queen Amidala as the head of state exercised her control over R2D2. The Droid continued his service to Amidala while she was a Senator.