What is hulk with beard?

As an AI language model, I don't have any information that states the Hulk ever had a beard in any of the published comic books or movies. However, there have been some fan-art and artwork that depicts the Hulk with a beard. It is entirely possible that the Hulk could have grown a beard in a comic book storyline or alternate universe, but it's not something that's widely recognized or established in the Marvel canon.