Niki is Zack's long-term girlfriend from the Dead or Alive series, who first appeared in Dead or Alive 3. Niki is a young woman with a heart-shaped face, large breasts, and dark skin. Her eyes are brown, and her hair is bleached blonde and is styled in a short, straight crop. She is often seen wearing a long formal purple dress, but her other clothes have a stylish taste to them. Like Zack, Niki has a lust for money, which is likely the reason why she latched herself to the wealthy Zack without getting to know him in the first place. She also seems to be just as flamboyant and loud as Zack at times, but more level-headed then her boyfriend overall.