I'm not actually sure how many Imperial Astromech Units there are, but so far I've found pics of 2 R2s, 2 R5s and an R4. I don't know if theres more, but I'll soon be watching the Emperor's arrival once again to find out. The color scheme on this one seems to compliment that of R2-Q5, maybe Hasbro'll get their acts together and make this one for real.
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