Ada Wong is a major character, appearing in the Resident Evil series by Capcom. She is a mysterious spy that wears a red dress. In the Hollywood films, she is played by Li Bingbing and appears in the fifth installment in de series, Resident Evil: Retribution.
Ada Wong is a supporting character for Leon S. Kennedy in Resident Evil 2. She first encounters him in the police station carpark, and claims to be looking for her boyfriend, who is a man named John. Later on, Annette Birkin reveals she arrived in Raccoon City seeking a G-Virus sample, but Leon at first doesn't understand why she would do such a thing.
Later, Ada is badly injured by a creature revealed to be the mutated William Birkin, on the way to Umbrella's underground complex, and later seemingly dies protecting Leon in a fight with the Mr. X Tyrant, and they share one last kiss. However, she survives and tosses the player a rocket launcher over a platform near the end of the game, but isn't seen clearly.
Ada later returned in the games Resident Evil 4, Resident Evil 6 and also the animated film, Resident Evil: Damnation. Side story events in Resident Evil: The Umbrella Chronicles reveal how she got out of Raccoon City and acquired her famous grappling hook. Leon is shown to have romantic feelings for Ada.