Well, I'll agree that he is 'strange', but disagree vehemently on the 'sexy' bit of your OP. What is it that you find appealing, exactly?
I used to see him from time to time (we did keep fit classes at the same place) - and he seemed to take himself very seriously. The rest of us would chat casually, and periodically he would proclaim something in his loud and smoky voice (very distinct timbre - like a broadcaster's voice).
He seemed quite aware that people knew who he was, and were listening to whatever he had to say. I had the impression he has a HUGE ego - and thinks he is almost always the most intelligent/interesting person in a room (and maybe he is!). Not appealing though. Not in the least.