- Name: Demon Fox Rasengan (妖狐螺旋丸, Yōko Rasengan; Viz "Nine-Tailed Rasengan"; Literally meaning "Demon Fox Spiraling Sphere"; Games "Vermillion Rasengan")
- Type: Unknown rank, Offensive, Short range (0-5m)
- User: Naruto Uzumaki (One-tailed transformation)
- Debut (Anime): Naruto Episode 134
- Debut (Manga): Chapter 232
Naruto forms the Rasengan while in a one-tailed demon fox form. The uses the fox's chakra shield as a shell to help in its formation, taking the place of his usual shadow clones. In the anime, this Rasengan is purple instead of the usual blue. In the second movie and the various video games, the Rasengan is red.