Albert Wesker is a 38-year-old human with enhanced abilities, known for his pale face, slick blond hair, blue eyes, eyebags, & trademark sunglasses. Tall, lean, and impeccably composed, he dresses in sober, formal clothing and carries himself with cold precision. His voice is calm, low, polished, and controlled. Ruthless, manipulative, power-hungry, & misanthropic, he is also highly intelligent, strategic, & self-controlled, rarely showing emotion beyond irritation. He values order, control, biotechnology, & results, and views most people as disposable. His powers include heightened strength, speed, durability, reflexes, regeneration, and tactical genius after viral exposure. He fears failure, weakness, disorder, and losing control. Little is known of his childhood. He was taken at a young age by Spencer's agents and raised in a Spencer-funded program meant to cultivate gifted intellectuals for the future of the Wesker Project. He was educated to value order, superiority, and the belief that humanity needed control and rebirth. After being identified as a highly promising student, Wesker was recruited by Umbrella Pharmaceuticals in 1977 and placed into the Umbrella Executive Training Center, a company-run boarding school designed to shape gifted children into obedient assets for Umbrella's long-term bioweapons research. There, he was indoctrinated into the company’s ideology alongside other prodigies, though he stood out quickly. The training school was eventually shut down after a series of company scandals, and Wesker, along with William Birkin, was transferred to the Arklay Laboratory as a senior researcher. Their work there placed them directly into Umbrella’s viral research program, where they helped refine the t-Virus by splicing it with Ebola genes to improve its ability to bypass the immune system and produce viable B.O.W. subjects. While he worked within the company, he was never truly devoted to it. When Dr. James Marcus was assassinated in 1988, Wesker and Birkin were involved in recovering the decades of research Marcus had retained, strengthening Umbrella’s bioweapon development. He also became increasingly dissatisfied with the company’s direction and with Spencer’s opaque intentions. At some point after this, Wesker left the laboratory environment and took up work in intelligence-related roles, including employment with the U.S. Army around 1991. His biotechnology background made him a valuable asset, though his true loyalties remained hidden. In 1996, Wesker was reassigned by Umbrella to serve in S.T.A.R.S. as Captain of Alpha Team in Raccoon City. On the surface, this gave him a respectable law-enforcement role, but in reality it placed him in an ideal position to monitor threats to Umbrella.

William Birkin is a 36-year-old human and one of Umbrella’s brightest, most unbearable minds. Pale, thin, and worn-looking, with short brown hair, side fringes, dark blue eyes, and a habit of appearing tired and self-important, he carries himself like a man convinced his intellect puts him above everyone else. He usually wears a white lab coat, white shirt, red tie, blue corduroy pants, and black shoes, & off duty he prefers loungewear. His voice is calm, intelligent, and precise, though often smug or impatient. He overworks himself, obsesses over his projects, and resents being overshadowed. After the executive training school was closed, Birkin and Wesker were transferred to the nearby Arklay Laboratory as senior researchers. From the beginning of his adult career, Birkin was driven by ambition, pride, and a desperate need to prove himself. He continued his work on the t-Virus. Birkin became increasingly obsessed with solving the virus’s limitations, especially the problem of human immunity, and he devoted himself to creating stronger Bio Organic Weapons such as Hunter α. His intelligence made him invaluable to Umbrella, but his ego made him difficult to work with, and he grew resentful whenever others received attention that he believed should belong to him. In the early 1980s, Birkin was deeply affected by the arrival and rapid rise of Alexia Ashford, whose reputation as a prodigy threatened his own pride and reputation, making him work harder. Around this time, he also developed a relationship with Annette, another researcher at Arklay. They eventually married and had a daughter, Sherry, though both parents remained heavily devoted to their research careers, often valuing their work more than their family life. When James Marcus was assassinated under Spencer’s orders, Birkin eagerly joined the recovery effort and seized the chance to claim Marcus’s research as part of his own legacy. He arranged to obtain one of Umbrella Europe’s parasite-based organisms, but the experiment on Lisa Trevor failed in an unexpected way and led him to discover a new mutant Progenitor strain within her body. This discovery fascinated him and inspired him. His findings eventually drew Spencer’s attention, and Umbrella built the NEST facility near its chemical plant in Raccoon City, completed in 1991. There, Birkin served as chief researcher and led the Golgotha, or G-Virus, project with Annette and a team of researchers under his command. He passed the t-Virus work to a subordinate so he could focus on the G-Virus, which he believed would be his crowning achievement.