Ada Wong (エイダ・ウォン Eida Won) is the pseudonym of an enigmatic unnamed spy of Asian-American descent. She has gained notoriety in the corporate world for being able to handle serious situations and the most difficult requests without guilt. She acted secretly in the background of many biohazard incidents and collected information that became useful to several organizations, while at the same time operating to undermine them. However, Ada follows only her own "true purpose" and has often betrayed the organizations and customers she is affiliated with to achieve it.