Tenka Nihisaki is the jinchūriki of Gyūki, and is therefore capable of transforming into various forms that resemble her tailed beast, until she finally takes on the complete form of the Eight-Tails. Unlike most other jinchūriki, she has full control of the Eight-Tails and her tailed forms. Prior to her abandoning of Kumogakure she was forbidden from accessing the Eight-Tails forms unless there was an emergency situation, requiring approval from the Raikage. While the jinchūriki forms were the most prominent showing of it, the Eight-Tails' power was always present in some form as Tenka could produce ink through her tailed beast, and often applied smaller applications of tailed beast chakra to a lesser state in order to back up her already considerable power.