|This is the article on Jiraiya's version. For Naruto Uzumaki's version of the technique, head to Sage Art: Ultra-Big Ball Rasengan.|
This technique adds natural energy to the Big Ball Rasengan. The natural energy rapidly increases it to gigantic proportions, is larger than the user's own body, and is created in an instant. Unlike Naruto's Big Ball Rasengan, it can be used with only one hand. If the Ultra-Big Ball Rasengan exploded, it would easily hollow out an entire mountain.
- In the anime, Naruto used this technique outside of Sage Mode, despite the technique's classification as a senjutsu technique.