Who's the old man in the sky in Cromartie High School?


In _Cromartie High School_ , an old man occasionally appears in the sky:

[![old man in
clouds](https://i.stack.imgur.com/O1dvV.jpg)](https://i.stack.imgur.com/O1dvV.jpg)

No one ever comments on this, so presumably it's only we viewers who see it.

Who is he, or what is it a reference to?

