Ada Wong

A key word to describe Ada would be duplicitous. No one really knows what side she is on, and when asked by Helena if she was trustworthy, Leon admitted that it was "not an easy question to answer." Though Ada can be trusted to repay her debts to people who help her, as she's assisted Leon numerous times to return his kindness. Ada possesses a sarcastic sense of humor, and constantly retains a cool, calm, and collected demeanor, being rarely startled or shaken by anything.

However, Ada is far from incapable of kindness or compassion. During the Lanshiang incident, she willingly put aside her current objectives to help Jake and Sherry fight off the Ubistvo (Which only targeted them due to Ada's own blunder), and stopped to help several innocent civilians and BSAA operatives fight off zombies while on her way to the Quad Tower (which ultimately proved pointless). Furthermore, she shares a very complex relationship with Leon; she developed a romantic bond with him in Raccoon City, and since then she has often gone out of her way to protect him, even defying direct orders from her superiors to kill him, although she often uses him to help further her own goals. She also knows Leon would never hurt her and would sometimes take advantage of that. One example was during their brief fight Eastern Slav Republic where they had their weapons points at each other, but she later calmly pointed her grapple gun up to leave the scene without worrying Leon would open fire on her.

Ada is shown to have an ironic sense of humor. This was shown when she decided to secretly help Jake and Sherry while saying she should "return the kindness their parents showed to her" because Wesker never showed her any kindness, treated her like an expendable pawn, and almost left her to die in Raccoon City, whereas Annette nearly shot her and William knocked her unconscious. She also has a twisted sense of humor as well. This was shown when she joked to Krauser she had already reported him dead to Wesker and she would be punished with a lot of paperwork if he showed up alive when she planned to kill him all along.