The "Faceless Speaker" is a member of The Faceless Gang that speaks through the intercom system of the building your in. He taunts the protagonist, gives updates, and threatens others members for not catching you yet. He's the voice of the gang and in control of everything through a network of speakers and cameras, a bit of a homicidal radio host. As for inspiration: Deep, controlling, one of the gang leaders, the voice of Nod from Command & Conquer is an idea (example) though obviously not a robot, all-in-all I'm open to ideas for the Faceless Speaker as I haven't found the right tone for it yet.