Is Barclay the best representation of the average robot ever put to screen?

While back there was a thread covering the finders and the replies went into detail about them and their connection the the O9A, this is my attempt at reviving the discussion. Particularly in the case of the O9A, whats their deal? What do they want, who do they work for/with? They freak me out, there is a lot of contradictory info on them