Kasumi (Kanji: 霞, Hiragana: かすみ, Rōmaji: Kasumi) is a kunoichi of the Mugen Tenshin Ninja Clan, who debuted in the firstDead or Alive back during the 1996 arcade release. One of the first three females that appeared in the series (alongside Leifangand Tina Armstrong), Kasumi is considered to be the main protagonist for the Dead or Alive series (specifically in Dead or Alive,Dead or Alive 2, and Dead or Alive 5), and is often viewed as the series' character mascot. She was the winner of the first Dead or Alive Tournament.
Originally second-in-line for the title of clan master within the Mugen Tenshi, Kasumi became a "Runaway Shinobi" after she ran away from home in order to avenge her older brother, Hayate. She is also the older half-sister of Ayane.