Yugito Nii's Jinchūriki Forms

Yugito Nii is the jinchūriki of the Two-Tails. Since her childhood, she was placed into a detestable training regime that at the end, allowed her to have great control of her tailed beast. Also, as shown in one of the Naruto: Shippūuden filler episodes, when Nekobaa asked Yugito for the Two-Tails' paw print, she was able to transform and provide the paw print. However, she might not have full control, as she was not one of the four people mentioned by Danzō Shimura to do so. She can induce the transformation herself. Her abilities were briefly seen during her battle with Akatsuki members Hidan and Kakuzu. After her resurrection, the Eight-Tails noted that her tailed beast felt "different".

Version 2
Whilst resurrected, Yugito displayed the ability to enter a "Version 2" form, by moulding the Two-Tails' chakra into a human-like shape around herself. When entering into this form, the sudden increase in chakra was such that it instantly vaporised Killer B's ink clone, which had immobilised her at the time.

In addition to forming a dark chakra cloak around her entire body, she also gained a more feline-like appearance, due to the presence of claws on her hands and the Two-Tails' ears atop of her head. With the power granted by this form, Yugito not only manifests both of her beast's tails, but even a simple swipe from her enlarged claws possesses enough strength to knock an opponent off their feet.

Partial Transformation
After her resurrection, she was able to form one of the beast's tails without the use of a chakra cloak.

Full Two-Tails Form
While transformed, Yugito is completely covered by the chakra of her tailed beast. In this form, her chakra takes the form of a blue flamed two-tailed cat with no pupils in her eyes. With chakra emanating from her, she will hunch over and the Two-Tails itself will materialise. Though small compared to tailed beast forms of other jinchūriki, the Two-Tails still proves a threat. In this form, Yugito is able to emit fiery spectral blasts from the monster cat's mouth. These blasts are very destructive and when coupled with the Two-Tails' strength, the surrounding area can be reduced to rubble.

During the confrontation to capture Naruto Uzumaki and Killer B, Tobi forcefully transformed the revived Yugito into her full Two-Tails form. However, during this instance, the Two-Tails' size was more comparable with that of the other tailed beasts.