Ada Wong is first mentioned in Resident Evil, in a letter written by a dying researcher, named John. She makes her first appearance in Resident Evil 2, secretly working as a spy for an unnamed company to recover a sample of the G-virus. Ada poses as a bystander who is searching for her missing boyfriend, John, when she meets Leon S. Kennedy. Her secret agenda is exposed, but she is seriously wounded by Anette Birkin and the Tyrant T-103. An epilogue in Resident Evil 3, as well as a fictional documentary in Code: Veronica confirm that Ada survived the ordeal. The Umbrella Chronicles later retell the specific events of her survival.