Black & White Guards

Wu Chang is one of 12 Hunters  currently featured in Identity V . "Wu Chang" is their collective name, individually their names are Xie Bi'an (White Guard) and Fan Wu'jiu (Black Guard).

Background
Xie Bi'an and Fan Wujiu (the White and Black Guards) have always been like brothers. As they traveled to Nantai Bridge one day, they noticed it was going to rain. Xie told Fan to wait under the bridge while he returned home to get an umbrella. After Xie left, the rain began to pour and the river rose, but Fan, reluctant to break his promise, stayed under the bridge. Shortly after, Xie returned with the umbrella only to find that the bridge was now submerged and Fan nowhere to be seen...[1] He had drowned.

Xie was so grieved that he had no choice but to live without Fan. No matter whether it was rain or shine, he carried the black umbrella of the day and wore white mourning clothes. He eventually committed suicide by hanging himself under the Nantai Bridge and left the black umbrella where Fan had stayed.

The umbrella was found by a merchant and placed in center of a hallway. Since then, his family has had strange things happen to them. The black umbrella in the room was often unsupervised. In the middle of the night, the sounds of men sighing fill the hall. Everyone said that White Guard's soul was in the umbrella. Merchants invited the Taoist to get rid of the umbrella to raise the spell on the town. Since then, the house has been calm and quiet. Soon after, the merchants went out, but on the way, they found that the country was in chaos, and that the umbrella was missing.

In Chinese folk legend, the king of the nether world admired their loyalty after both died, and made them generals. Their main job was to punish immoral souls and aid kind souls.

Trivia

 * from Chinese mythology