Oooh he was tough for me. My best guess is FeSi. He seemed Je-lead for several reasons, and I felt like he spoke in an interpersonal manner, with sensitivity coating his speach. I didn't get much in the way of Ni vs Si but I went with Si since he had brow wrinkles often present on Si users and he blinked frequently.
"It is the theory that decides what we can observe" -Einstein