Ada Wong

"Leon...long time, no see."

- Ada meeting Leon in the Salazar Family's Castle Ada Wong was a heroic major character from the Resident Evil series and very close to Leon S. Kennedy.

Raccoon City Incident
"If the T-Virus did this, what would happen if the G-Virus got out?" Ada was given the mission by her employers to steal a sample of the G-Virus from the self-injected William Birkin in Raccoon City while it's being infested with T-Virsus infected monsters. She encountered Leon and claimed she's searching for her boyfriend as to hide why she's really here. In the end, Ada fakes her death in front of Leon.

Los Illuminados
"Maybe you forgot, Wesker. I don't always play by your rules." Six years later, Albert Wesker recruits Ada into the 3rd Organization and was deployed in Ganado territory to obtain the Las Plagas Dominant Species sample. She fought the numerous Ganado-controlled Villagers around the Village and soon encountered Luis Sera who has the sample. In Ramon Salazar's Castle, Ada was to meet Luis, who has the sample, in a certain location inside the Castle. She encountered Leon and then headed to the location but was too later when she witnessed Luis murdered by Osmund Saddler.

Ada then infiltrated Saddler's Island Base to collect the sample from him. Wesker then ordered her to let both Leon and Saddler fight for the sample, then finish off the surviving winner and then finally obtain the sample. During her mission, she encountered Jack Krauser, who was another agent within the same organization and reported to be dead by her, she then finally kills him. Ada fights Saddler but is captured, Leon then finally defeats Saddler and Ada takes the sample, then betrays Wesker and gives the sample to her real employees.

C-Virus Outbreak
"If she wants the game, she'll get one. With the real Ada Wong." During this outbreak, Ada's identity has been stolen by the bio-terrorist: Carla Radames. Ada is blamed for her crimes but eventually takes out Radames as well as assist Leon in killing another mutated bio-terrorist: Derek C. Simmons.