Ruler of the Fourth Court of FENG-DU, the Chinese Hell.
He runs Black Pool Hell (which has nothing to do with the seaside resort of Blackpool in England — at least, as far as we know). ‘Black’ in this case means the dark red of freshly congealed blood.
This is where forgers, counterfeiters and cheats end up. Tax evaders, false vendors and people who write warranties for electrical goods also get punished here.
Punishment varies according to crime, with cheats being clobbered with hammers and dodgy Ebay merchants getting the full crush-to-a-pulp treatment.
The Pool of Blood is always hungry, so WU-GUAN-WANG also takes care of family matters. Disrespectful daughters and rude sons are mashed into their component parts with great gusto.
This is also the place of the terrible Bee Torture. We can probably leave that one to your imagination.