Dr. Birkin

She's a complex and has been portrayed differently in various versions of Resident Evil 2. She is often described as a highly intelligent but deeply obsessed scientist, whose professional devotion to the G-Virus project makes her neglectful of her daughter, Sherry. Her motivations often involve a conflicting mix of scientific obsession and a desperate need to protect her family, leading her to make ruthless, "the end justifies the means" decisions, though her love for Sherry is revealed in later moments.