fishmanlee said:ig-88 is a droid and is he a slave?
Going by the films alone I guess he is (the EU makes him out to be some sort of Robot Che Guevara/Spartacus but that comes from the more silly end of that mythos) just because we aren't told who is owner is doesn't mean he hasn't got one.
I like the fact that his head was one of the drink dispensers from the Cantina in ANH turned upside down.