Mofo Jones wrote:Well, I'm sure there are other astromechs with the same colors that don't have the same name.
While that is probably true, R2-Q2 has been listed by name through various sources in each of those roles specifically. It's the "galactic trailer park" concept at the core of Star Wars. Huge galaxy with hundreds of planets, but everyone is either related to, has worked with, fought against, was a roommate of, or somehow encountered everyone else at one point or another. It's six degrees of Kevin Bacon: Darth Vader edition, and you could probably cut it down to three steps.
And StoutFiles: I'm pretty sure the Q7 droids were only invented because the artist who drew the cross section book didn't want to figure out how to fit a real Astromech into the picture after the grief stirred up with the N-1 droid socket.