Wilhelm is a random character in Grand theft auto: Chinatown wars. His first two mission are simple, although they have different starting points: drive him to city hall so he can buy more property. The first time gets you 250$ and the second one is 500$. His third encounter is on a bridge. He says the bank forclosed all his purchused property, and that he lost the keys to his house in the river. He jumps despite Huangs attempts to stop him. You get a awsome reward for this though. Huang notices something behind where Wilehelm had been standing: his keys( guess he didn't drop them). His house is now yours, and it has a garage.