Topher Brink is the nerd behind Dollhouse. He's the guy that came up with the technology enabling this system to run the way that it does.
In his official biography, Brink is described as a genius programmer that is articulate, attractive and blithely amoral.
Echo: Something fell on me.
Topher: I bet it was something great.
Topher: We're great humanitarians.
Boyd: Who would spend the rest of our lives in jail if anyone ever found this place.