Resident Evil 2
Discoverer of the G-Virus, and chief manager of the G-Virus project. Husband to Annette Birkin, and father of Sherry Birkin.
Once the apple of Umbrella's eye, talented scientist William Birkin began to have disagreements with the head office over the G-Virus project, and decided to contact the US government (particularly the military).
Umbrella's special forces raided Birkin's lab when it was discovered he was attempting to sell B.O.W.s (Bio-organic Weapons) directly to the government. On the brink of death, he deliberately infected himself with the G-Virus and mutated into the creature known as G.
Height: 178cm. Weight: 66.7kg. Blood type: O. Age: 36 (as of 1998 / Resident Evil 2)