At the end of Westworld season 1 episode 7, we see that Sector 17 is Ford's secret lab. While he asks Bernard to kill Theresa, we can see that a robot is being built in the room.
As it is not in the "official" Westworld labs, I assume that this robot is for Ford personal use. Do we know who it is ?
I first thought it was a robot to replace Theresa and hide her death but it looks like I'm wrong.