Saiken Rokubi, commonly referred to as the Six-Tails, is a tailed beast in the Naruto anime and manga series. Saiken resembles a giant, white, slug-like creature with six tails and is known for its ability to excrete corrosive substances. Unlike most tailed beasts, Saiken has a more amicable personality and forms a unique bond with its jinchūriki, Utakata. Saiken plays a crucial role in the larger narrative surrounding the Tailed Beasts and their relationship with humanity.