William was born in the southern regions of Brazil in a wealthy family. His father, a very 'high-ranking' employee in the arms manufacturer company Taurus, decided to teach Will all he had to know to continue the family business. William learned proper businessman lingo, accounting and several other enterprise-related duties. Once William had finished school, his father put him in college, more specifically in an Adminstration course so he could further enhance his abilities as a future heir of his father's work. Time came and time went, and William got himself a degree and all the knowledge he needed to continue his father's work and even start his own business, if he wanted to. His father's death some years delivered a blow to William's morale and will to continue in his line of work, even with the rather decent pay he received. From there, it was a downwards spiral towards drugs, alcohol and burning money away on unnecessary things, which eventually ended up in William finding himself with quite a debt, and consequently a target on his back after getting involved with the wrong sort of folk. One thing led to another, and William found himself cutting risky, but well-paying deals with the same wrong sort of folk.
To ensure he didn't get his throat slit one of these days, William started making deals with cartels, criminal factions, illicit groups, so on and so forth. And for some odd reason, the thrill kept him going, as risky as it was. Pebble by pebble, William build a network of connections extending all the way over to Africa and Eastern Europe, with contacts ranging from private military companies to anti-government groups to warlords across the world. Of course, some deals needed a personal appearance to ensure everything went right, and unfortunately for William, the last deal he'd ever make would be in Chernarus, just before all hell broke lose. A good businessman, specially in William's line of work, never questions his clients' reasons for a contract. And when those shady Chernarussian black market contacts needed some submachineguns and pistols for 'preparation' reasons, William didn't think much of it. That is, until he found himself in a country getting swallowed by war, refugees and even worse- a country with closed airports.
From there, things only got worse and worse, and it was only then that William realized what those men were readying up for.