Board Thread:Speculation House/@comment-25579519-20141025204009/@comment-31.205.73.160-20150215231610

Good points, though "one of a kind" rarely means unique in that exact, specific sense - generally it means that there is nothing even vaguely similar to her.

The other point is valid though - I would imagine that Penny was built under wraps, so if anyone else was working on one too they probably wouldn't brag about it, so there's nothing to say that Torchwick couldn't acquire an android, it's just extremely unlikely. While we don't know exactly what it took to build her (SaM's guesses are good guesses though), one would imagine it isn't something anyone with a basic knowledge of robotics can do. I would also say it was odd one would use an android in Neo's somewhat assistant role - since I doubt an android like Penny can be built like your average car, it seems odd, if Neo was an android, to use her in such a role.

The most likely solution is she is merely a well-trained mercenary who likes psychological warfare.