Formally Dr. David Xephos of ONI, his work included that of AI deconstruction. His work along with the employees working for him, had been concidered a threat by Dr. Leonard Church. His work-force was targeted and assassinated 1-by-1 by Project Freelancer's top Agent of then, Agent Texas. David managed to survive, and he swore revenge on Project Freelancer and Agent Texas.
Still thinking up a back-story for Niz.