Anna Williams

At first Anna was hired to kill Heihachi Mishima, the sponsor of the very first King Of Iron Fist Tournament.

During the second tournament she found out, that her sister Nina was hired to kill that tournaments host, who at the time was Kazuya Mishima. Hearing that, she decided to become one of Kazuya's bodyguards. She managed to stop Nina from killing Kazuya. Her captured sister was used as an experiment subject for cryogenic sleep. Anna feeling that she will miss her sister and that Nina will stay young, when she will become old, Anna asked to also be the part of the experiment. She asked to be awoken the same time as her sister.

When she awoke she found out, that her sister lost her memory and couldn't remember anything about Anna. Now she felt she must help Nina to remember her past and stop her from being a hired killer again, but she failed to do so.

Anna tried to make contact with Nina two years later to once again to help her remember, but that backfired. Nina started attacking Anna once she saw her, which resulted in a gunfight, that lasted for days. Not getting anywhere with the gunfight and with the fifth King Of Iron Fist Tournament announced they decided to finish the fight at the tournament. Nina eventually defeated Anna at the tournament.

Feeling angry by her defeat Anna felt she needed to get revenge against Nina. Once she found out, that Nina joined Mishima Zaibatsu in the war, she decided that the best way to get her revenge against her sister is to join with G Corporation and once again be Kazuya's bodyguard.