En 1998 Albert Wesker, el padre de Jake Muller, mandó a Ada Wong a Raccoon City para que recuperase una muestra del virus G que William Birkin se había guardado. Cuando la mujer de William, Annette, interfirió en la misión, Ada utilizó a Leon Kennedy para que la ayudara sin que él se diese cuenta. Al final, Ada consiguió regresar al lado de Wesker con una muestra del virus.
En 2004 Albert envió a Ada a Europa para que obtuviese una muestra del parásito Las Plagas. Allí se encontró a Leon de nuevo y acabó robando la muestra que él había conseguido. Sin embargo, no se la entregó a Albert, se la quedó y desapareció del mapa. No tenía intención de ser un peón más en los planes de dominación del mundo de Albert.
In 1998, Albert Wesker, Jake Muller's father, sent Ada Wong on a mission in Raccoon City to retrieve a sample of the G-Virus William Birkin was hoarding for himself. When William's wife Annette interfered with that mission, Ada used Leon Kennedy to have him unwittingly aid her. Ada then made her way back to Albert with a sample of the virus in hand.
In 2004, Albert ordered Ada to Europe to obtain a sample of the Las Plagas parasite. There she encountered Leon again and ended up stealing the parasite sample he had procured. She did not, however, hand the sample to Albert. She kept it for herself and went off the grid. She had her own intentions for keeping the virus. She was not going to allow herself to be a pawn in Albert's plan for global domination.
Ada eventually learned of Wesker's death in Africa. Below is a memo written by her during this time.
I just got word that the BSAA took down Wesker. I can't say that I'm saddened by this, but he was a large part of my plans while we were partners. I feel almost a slight emptiness inside.
He had a very large impact on many, and held the reins on bioterrorism. I'm interested to see how this changes things, but for now, I need to keep my eye on Simmons and his organization, The Family.
No matter what happens, I will never lose sight of my ultimate goal.