Mask of Hidden Agendas Concept

"Mask of Hidden Agendas" concept. Part of a character concept I'm putting together based on the idea of an NPC character that operates as a gun for hire but is unpredictable in nature. An ancient machine that wants to be human but continually fights its AI instinct to be ultimately self serving. 
This is the animation idea I had of what happens when the NPC is activated by the player along with the some facial animations of its face plates swapping out. 
My goal is to put together a full character concept in the next week and then implement it into a full illustration so more to come! This is just the initial phase.