The Two-Tails (translating for "Nibi") is one of the ten classes of the tailed beasts.
Compared to most of the tailed beasts, Two-Tails are shown to be respectful and polite towards others, speaking in a formal manner using 'watashi' when referring to themselves and using honourifics when addressing others while introducing themselves to their and other jinchuriki.
Two-Tails have flexible muscles, which grant it great speed despite their large size. Their brute strength are enough to initially pummel S-Rank criminals who had attempted to use brute force to stop their paws, hands, and fins forcing them to use urge A-Rank jutsu/tekuni to survive these attacks. Two-Tails have the ability to manipulate two main chakra natures as such, they can use these two to mixture an advanced chakra nature. Two-Tails are able to create Tailed Beast Bomb.