
Nina's personality remains monotonous yet sadistic/cruel when it comes to teasing Anna. Ironically, after her father's death, Nina was controlled by Ogre like a puppet, thus, she was unable to feel any emotion at all. The only man she had ever trusted was her father Richard, who had died shortly before the events of Tekken 2. Her bitterness/resentment towards men could be a result of her deflation after Tekken 2. In fact, she had been drugged by an underground force when she was young in order to create the perfect assassin/serial killer, regarding the chronology of Death by Degrees. Nina persona seems to be cold and indifferent. The game received mixed reviews by critics, but found more acceptance among fans of the Tekken series. It was released in Japan in January 2005, North America in February 2005, and Europe in April 2005. Nina also stars in her own action/strategy game, Death by Degrees. Most importantly, Nina herself is also the older sister of Anna. During those years of Cryogenic sleep, she was impregnated without her consent and subsequently gave birth to Steve Fox (who first appears in Tekken 4 and onward). They are experimented upon for 15 years (this is the reason why they both remain so young for many years of the tournaments). During the end of Tekken 2, Nina and Anna undergo Cryogenic Sleep. She has a rivalry with her younger sister, Anna Williams. Nina has a lethal fighting style, consisting of throws, grapples, and holds.

Nina Williams is a cold-blooded assassin/serial killer that made her first appearance in the original Tekken game and has appeared in every Tekken ever since. Her Sister, Kazuya Mishima, Heihachi Mishima, and losing Her father, Tom from "Tom and Jerry", milk tea, and scotch Traveling, retracing memories, and working for her bosses Koppo (Bone Martial Arts), Assassination techniques and Aikido Yumi Toma ( T1, T2, T3, & TTT)Lisle Wilkerson ( T4, T5)Mary Elizabeth McGlynn ( DbD, T6, & T6:BR) 1.2.4.1.1 Ending Animation "War Between Sisters".1.2.1.1.1 Ending Animation "High Heels".
