Largest stockholder and CEO of the Tyrell Corporation. Rachel is the enigmatic niece of founder Eldin Tyrell, who only appeared on the business scene shortly before his death. Rachel was largely content to let the business run itself, but then in 2070 something changed. She became intensely involved in the day to day running of the business, turning a minor robotics and genetech company into a major player in the security contracting field, with a force easily rivalling any national or corporate military. She is ruthlessly ambitious, a trait that is not tempered by her deep paranoia. For reasons known only to her, she has purged Tyrell Corporation of most of its metahuman and awakened staff, and set about transforming her business into an army to combat a coming magical threat that she fears. Following the destruction of the Tyrell Seattle Troop Dispatch Center Rachel Tyrell bitterly ranted at Team Adventure for hindering her plans and endangering the future of biological life on Earth.