- Name: Four-Tailed Fox Menacing Ball (四尾狐威鞠, Yonbiko Imari)
- Type: Tailed Beast skill
- Users: Naruto Uzumaki (Post Transformation), Sora (Post Transformation) (Anime only)
- Debut (Anime): Shippūden Episode 42
- Debut (Manga): Chapter 295
While in his Four-Tailed Fox form, Naruto disperses a massive amount of his chakra and blood into the air. He then solidifies this chakra into a sphere and swallows it, which explodes within him. Naruto then releases the explosion in the form of a massive wave of chakra from his mouth. The blast is so powerful, that it was capable of destroying three Rashomon gates without losing any of its momentum. Orochimaru has noted that if he were attacked by the ball or its feedback, he would surely be killed.