The Ultra-Big Ball Rasengan is a more powerful version of the Big Ball Rasengan.
In an instant, the user creates a Rasengan of gigantic proportions. When it impacts, there is a large shock wave unleashed that can send unsuspecting shinobi flying. As with many Rasengan variants, Naruto needs the help of a shadow clone in the Ultra-Big Ball Rasengan's formation. By the time he's Hokage, Naruto can perform this technique with one hand and even pass it on to Boruto Uzumaki to use. This jutsu is so chakra-intense that it was capable of overwhelming Delta's shinobi-ware's formidable chakra absorption capabilities.
When in Sage Mode, the user can perform a senjutsu-enhanced version known as Sage Art: Ultra-Big Ball Rasengan (仙法・超大玉螺旋丸, Senpō: Chō Ōdama Rasengan, English TV: Sage Art: Massive Rasengan). It is said that its destructive power – were it to explode – would easily carve away an entire mountain. Fittingly, upon its first successful use it blasted through a God Tree and kilometers of mountainside before bursting in the upper atmosphere, killing an empowered Momoshiki Ōtsutsuki.
- According to its Sha no Sho entry, the standard Ultra-Big Ball Rasengan also used natural energy when used by Jiraiya.
- In the games, Jiraiya is able to use this technique without Sage Mode, though he referred to it as the Gallant Rasengan (豪傑螺旋丸, Gōketsu Rasengan).
- Sha no Sho, page 285
- Naruto chapter 560, page 9
- Boruto: Naruto the Movie
- Boruto episode 65
- Boruto chapter 33
- Naruto chapter 497, page 4