Sheng Kawolski

Sheng Kawolski is a young boy who is in charge of the water purifier in Diamond City

Background
Despite his age, Sheng throws his weight around with any adults he encounters, even calling the player character a "jackass" to their face if they refuse to buy the purified water which he peddles.

During the day Sheng is in charge of Diamond City's water purifying system. At night he goes to the schoolhouse and sits at a desk to take night classes.

Quests
Pool Cleaning: The player character can ask Sheng for work, whereupon Sheng will give the job of clearing the water around him of any debris that could clog the water filters. Among the miscellaneous junk the player character must find is a human skull. When the job is complete, the player character can confront Sheng about this, which Sheng will casually reply that he may have sent someone else to do the same job before the player character and that perhaps that person found a live grenade.

Effects of player character's actions
He will replace Travis Miles as the DJ of Diamond City Radio should Travis be killed during the Confidence Man quest.

Other interactions
Upon first approaching Sheng, the Sole Survivor will find him arguing with one of the Diamond City guards about the purity of the water he is in charge of keeping clean.

Appearances
Sheng Kawolski appears only in Fallout 4.

Behind the scenes
Sheng was voiced by one of Emil Pagliarulo's sons, though he is not credited for the role.