Isobu (Clone)

In the anime, Tsunade states that Isobu disappeared after the Third Shinobi World War.

Personality
Isobu speaks in a timid manner, referring to itself as which is usually used by young boys.

Appearance
Isobu primarily resembles a large turtle, but with a crab-like shell, spikes about its being, and three shrimp-like tails. Under its shell, it has red, muscle-like tissue. It has a pair of human-like arms and hands, but no hind-legs. Its lower jaw is rather big and has teeth-like horns, together with its big forehead, which also has horns, it somewhat resembles a mouth with big teeth, making it look like the rest of the face is inside the mouth. Its eyes are dark and have red pupils. In the anime, the eyes are red with yellow pupils. Its right eye is constantly closed, indicating some sort of injury, and because of this, it is particularly vulnerable to attacks directed at its right eye.

Abilities
As a tailed beast, Isobu possesses an enormous amount of chakra and can perform the Tailed Beast Ball. It also has the ability to create coral, and swim at very high speeds. Tobi suggested that Kisame would have been a better choice for capturing the turtle, given its affinity for water. Isobu has also been shown to be able to roll into a ball and attack its opponents, making full use of its shell and its many protrusions in a manner similar to the Akimichi clan's Spiked Human Bullet Tank. Its tough skin and shell also provides additional defence for Isobu, allowing it to withstand nearly all forms of attack. In the anime, it was revealed that its only known physical weakness it possessed was its eye, as hard as its skin and armoured shell are, it cannot harden its eyes and so seems to keep one closed at all times.

Isobu's abilities were greatly elaborated upon: it could create shockwaves to repel attacks and produce a large tidal wave that spread away from it in all directions; it could strike with any of its three spiked tails to break through most defenses. Of Isobu's more specialized abilities, it could produce a hallucinogenic mist that exploited the victim's insecurities and forced the victim to face them. It could also shoot powerful chakra-infused water balls. When it ate something, thousands of miniature versions of itself would attack what it had eaten within its stomach, presumably to speed up the digestion process. In addition the beast was shown capable of materializing an entrance to a separate dimension in which it could hide its presence, until it was ready to return wherever it chooses.