I saw him again in my mind's eye this morning. He was like a cardboard cut-out painted black and only from the shoulders up. I saw him as if he was outside in front of the house but almost across the street. I felt nothing about him other than passing curiosity at his appearance amongst all the other pleasant images I was "seeing".

Then this morning as I was pondering the message I had received from the spirit Yogi, "Kill your self", I heard the Gadget lyrics in my mind (thanks to your link OQueen), and I made a connection that the MIB are ego defenders that want to keep the ego (which is separation from divine will) alive. Perhaps then the closer you get to a truth, the more likely MIB will pop up.