Ada Wong is a mysterious and enigmatic character from the Biohazard series. She is known for her intelligence, agility, and resourcefulness. Ada often operates as a double agent, playing both sides to achieve her own goals. Her relationship with the series protagonist, Leon S. Kennedy, is complex and layered with mutual respect and underlying tension. Throughout the series, Ada's true allegiance remains ambiguous, making her one of the most intriguing figures in the Biohazard storyline.