Except for that last one it just looks like his side cape dealie is pulled around to the front.
Why can’t R2-D2 make some new beeps? He just says the same shit over and over…
I think he has simpler vocal programming compared to other droids like Threepio or K2-SO. I would think that R2 has a set list of responses, and if he has to say something that isn’t in the list, he pieces a new sentence together using sections of his other responses.