Paul Smith is an FBI field agent who has been chasing the urban myth of the Dollhouse long enough to have lost any shot at promotion. Becomes obsessed with and a twisted romantic foil for Echo
Topher Brink is a genius programmer who's articulate, nerdily attractive and blithely amoral. He's responsible for imprinting the Dolls—and making sure they stay unaware of anything. Is fascinated by the science and kind of digging the illegality. Fun to be around but might not be remotely trustworthy.
Sierra = Strikingly beautiful. A Doll like Echo, she has every personality in the world but her own. Is not as self-aware as Echo but is instinctively drawn to her as a friend.
Victor, also a doll and a friend of Echo's, who is childlike when he's inactive, and everything from Errol Flynn to young DeNiro when he's active.