Will the grey man reveal personal information about my guests? the grey man is there to entertain your guests. He may tell you who your favourite film star is but he does not contact dead relatives or reveal things of a private/sensitive nature. How many people will get to see him? Over a two-hour period, he will get to see up to 15 groups/tables. Why have the grey man? How can I be sure that he is right for my event? He extends the following guarantee: if you, the client, are in any way unhappy, the grey man will cancel all monies owed. This has never happened. Does he have insurance cover? He has public liability insurance for £2 million.