Maybe, but he was obviously intelligent as he was wearing glasses.

The cook's clothes (if that's what they were) are a dead giveaway that he was at least slightly unhinged. If he was indeed a cook. I took in a cook once, though his arrival was announced and he was a friend of a friend. He ended up sleeping on my kitchen couch for almost a year; no glasses but his IQ is supposedly 150+ and he has a photographic memory. He's now one of my dearest friends and I had to throw the couch away.

Very weird thing to experience, OP- probably best that you contacted the po-pos.