Founder of, and ex-CEO of the Amagi Corporation who believed in a distinct divide between the rich and the poor.

In the pursuit of his dream to create the perfect artificial humans, he initiated the N.E.T. Project, but it eventually led to the escape of his creations, named 'Players'. Having a heavy sense of responsibility for the incident, Mitsugai then commenced Project Z.E.T. to set things right, though once again his plans were foiled by the betrayal of Kanzaki. He then became hell-bent on retrieving ZET back after countless failures to create a new one.

Mitsugai's methods were often hard-handed, but after the destruction of his laboratory a second time by Players, he seems to have softened up, now giving Jin a choice of either becoming ZET or living as a normal human, though it is unknown if this is just a facade or not.

(source: Wikipedia)