Ada makes her first on-screen appearance in Resident Evil 2 (1998), set several months after the events of the first game. In the game, she is a spy for an unnamed rival company who is sent to recover a sample of the deadly G-virus from Umbrella's lab in the zombie-infested Raccoon City. Ada poses as a bystander who is searching for her missing boyfriend John when she meets Leon S. Kennedy, a rookie police officer trapped in the city. Her secret agenda is exposed, and (depending on which scenario is played, although the second outcome where Ada kisses Leon is canon) she is seriously wounded by either Annette Birkin or the monster Tyrant T-103 in an attempt to save Leon. She later drops him a rocket launcher to defeat the T-103. An epilogue in Resident Evil 3: Nemesis as well as a fictional documentary in Code: Veronica confirm that Ada survived the ordeal. Her role in Resident Evil 2 is explored in more detail in Resident Evil: The Umbrella Chronicles (2007) and Resident Evil: The Darkside Chronicles (2009). The Umbrella Chronicles shows Ada's escape from Raccoon City, as she fights her way out and grapples onto an Umbrella helicopter as it passes overhead. Ada appears as an enemy in another Resident Evil 2 spin-off game, the non-canonical Resident Evil: Operation Raccoon City (2012), in which she is also a playable character in its multiplayer "Heroes" mode. She returns in the remake, also titled Resident Evil 2 (2019).