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Ada Wong is a recurring character in the Resident Evil series, who is seen several times giving a helping hand to Leon Scott Kennedy, most recently in Resident Evil 4. She is referred to by Jack Krauser as the "bitch in the red dress".
In this game she works under Albert Wesker and her objective is to obtain the sample of Las Plagas and return it to Wesker
You can play her story in the extra mode "Seperate Ways" She is also playable in "The Mercenaries" and "Assignment Ada"
