Imam Yahya Hamiduddin (الامام المتوكل على الله يحيى) - YEM (Yemen)

[TheRealVladimirLemon]

Notorious for his refusal to be photographed, all we have of him at the moment are drawings. I don't expect anyone will be able to find a photo, but if you do it would be quite impressive.

His most well known pictorial rendition.

Be aware of the fact he has many relatives, so don't get them confused with the man we're looking for here, though it will be easy to thing you may have found something when you actually have not. Presumably any real photo of this man would have not come from official channels, and would likely have been done without Yahya's knowledge due to the aforementioned refusal of being photographed. There is one known existing example of this:

Best of luck! This is a top tier challenge, perhaps the hardest one of all.

[YourIraqifriend]

He didn't want photographs but he allowed paintings of himself some of which can be found in the National Museum of Yemen