Wow. Quite overboard on the history. Way too special. Why would these robots have been made if there are nekovalkyrja? That aside, I think the character is good.
Please don't abuse the history part of your character's bio by using it to engineer your character's skills. What I mean by this is I don't want characters coming into the RP with years of intense training as an assassin or with scars from an RPed-out battle that you weren't around for.
-http://www.stararmy.com/ccg/ccg2_s3_p1.html
I've read the CCG, but I don't remember that part, which is odd because it's what Zack and I complain about. You've set your character up as an efficient killing machine, which you may or may not be able to accurately RP.
Since I don't know if you cleared up the stuff about the Pleasure Bot Company, robot model, and all that before now, so I won't say anything else about that. It'd be easily explained anyway, I think. However, I would suggest doing away with the "killing all his brothers" part. That's the sort of significant event which should be RPed out. If you just set him up to roam around finding out the meaning of being human, I think you'd have good social RP, and you might get action if you have him find out about his brothers later and start on killing them. I don't know what kind of setting you'd have to be in for the latter, though.
Really, I think it's an interesting character, just a bit too detailed. You likely won't have to make drastic changes to get your character approved, but it would make me happy. Have fun, whatever you do.