teharri said:

I heard somewhere that IG-88 was in the junkroom where 3p0 was attacked. Just a little easter egg.

I even remember reading somwhere that this was IG-88 (from the Star Wars Fact-File that came out years ago). The story was that there were about 5 (or so) robots like this IG-88 and Boba Fett was their main enemy

One of those droids followed Boba to cloud city and got shot by Boby and dumped into the garbage, so I always wondered why this IG in the garbage was white - the rest looks quite alike