(Covers information from the S.D. Perry novels)
Ada Wong was an Asian-American spy working on behalf of the mysterious Trent, the leader of an underground anti-Umbrella organization.
In preparation for missions, Ada developed a character. Should anyone be suspicious as to her weapons skills, she was to explain she was an expert paintball player, having spent her teenage years playing with her uncle, along with a fellow art gallery shopper in New York.
Raccoon City mission
Ada was marked as deceased by Trent after the bombing of Raccoon City, believing her ability to escape the lab explosion and the city's subsequent destruction were "slim to none".