For those who dont know me:
Not much is known about Ada Wong's past or motives. What is known is that Ada was a corporate spy working for an unnamed competitor of Umbrella, that intended to procure all sorts of biological weapons and specimens. She was also a trained assassin, who was proficient with several types of weapons and fighting techniques. Presumably, Ada joined the Organization for personal reasons outside of her company's interests, though she has yet to reveal what they are. She was sent to infiltrate the Arklay Laboratory, hidden beneath a mansion in the Arklay Mountains and was romantically involved with the new head researcher, John Clemens, as a means to steal intelligence for her company. John was very serious about his relationship with Ada, and even used her name as his computer account's password.
John lost his life, due to the t-Virus outbreak caused by James Marcus, after writing one final letter to Ada instructing her to get evidence of Umbrella's experiments and expose them to the public. She never read the letter because she was not in Raccoon City at the time.
Several months later, Ada was given another mission by her employers. Like Umbrella U.S.S. agent HUNK, her objective was to steal a sample of the G-virus from the self-injected and mutated William Birkin in Raccoon City during the t-Virus outbreak. Ada went to the Raccoon City Police Department to find a reporter named Ben Bertolucci, who claimed to have vital information about the Umbrella Corporation. During her search in the department, she met up with a surviving officer Leon S. Kennedy. With Leon's help, the two were able to find Ben, who had locked himself in the precinct's jail cell for his own protection from the zombies. Ben didn't tell them anything, but he did tell them a way out of the city by going through the city's sewers. Leon and Ada tried to find a way into the sewers until they came across a closed shaft. Leon gave Ada a boost into the shaft. As Ada got to the other side, she stumbled upon young Sherry Birkin who ran away from her. Sometime later, Ben provided the two with documents detailing the conspiracy between G-Virus Antigen, Chief Brian Irons and William Birkin, the designer of the G-virus, but not before he was fatally wounded by a mutated Birkin.
Ada and Leon made their way into the sewers as they attempted to flee the infested city, basically cooperating with each other. As they headed towards the sewers, they spotted Annette Birkin, a scientist from Umbrella. Ada chased after Annette, only to get Leon shot when Annette attempted to kill her. Ada went after Annette and confronted her. Annette told her everything about the G-Virus and how the city had become infected by the t-Virus, and also told her that John, Ada's boyfriend from Umbrella, was dead. The two fought only for Ada to punch Annette into the pool. Ada fled and caught up with Leon who was still wounded by the bullet. She patched up Leon's wound. They found a lift which led to Umbrella's Underground Lab, but before they could reach the lab, Ada was struck by a rapidly-mutating William Birkin and was critically injured. Leon defeated the mutated Birkin and saw Ada waking up from consciousness while the lift powered down. Leon left to find out where they were, and Ada then left once the lift powered back up. Ada then saved Leon from T-00, whereby she sacrificed her life. Ada was once again seriously injured and was presumed dead.
