My vote goes to Max Payne 3. That beard was grieving about as hard as it could. The fact he had avoided a grief beard up until the third game made it all the better. It was all pent up in his chin and eventually burst forth in a sullen, unkempt wave of despair. My own beard is scared of that beard, and believe me, my beard understands his beard isn't even real so that's really saying something.
Kenshiro from Hokuto no Ken/ Fist of the North Star had the most tragic beard. While its existence was brief, it bore the despair and grief of multiple losses akin to the seven scars across his chest. The beard was so sullen it blackened the white of his eyes.
I'm in awe.
This topic lead me down a rabbit hole of sad characters and got me thinking of Robo Cop. Since one of the only parts of him that was human was the face did he have to shave himself every so often? Was it someone's job to shave him? Like part of his weekly check ups did the guy changing his oil and tightening all the bolts have to shave him too?
My vote is for Captain Ahab. He is always draw with a really thick beard. A man dedicated to that kind of vengeance after tragedy has no time to shave.