Isobu

Biodata

Background / History

Isobu rested on the bed of a lake near Kirigakure when Uchiha Chen located him. Chen identified him as the Three-Tails, woke him by striking his forehead with a wind blade, and entered his mental world through Sharingan genjutsu. Isobu's mental defenses were overwhelmed with little effort by Chen's Mangekyō Sharingan. 19

Uchiha Obito subsequently entered Isobu's mental world and bound the beast's consciousness with a chain formed through his ocular power, declaring ownership over him. 19

Kirigakure later launched a concentrated assault to capture Isobu. Their combined techniques caused almost no visible damage, but Karatachi Yagura interrupted Isobu while he was preparing a Tailed Beast Bomb. The incomplete blast detonated in Isobu's mouth, leaving him dazed long enough for the village's sealing team to restrain and seal him into Yagura. 20

Within Yagura's mental space, Isobu angrily confronted his new jinchūriki. Obito then intruded into the sealed space and immobilized Yagura with his Sharingan, maintaining outside control over the Three-Tails' situation. 20 Uchiha Chen later used Kotoamatsukami to take control of both Obito and the Three-Tails. 22

Appearance

Isobu is an enormous, spiked turtle with three tails, resembling an underwater stone mountain while resting on a lakebed. 19

• Massive turtle-like body and shell covered in spikes.
• Thick, short neck.
• Two enormous yellow, beast-like eyes.
• Three powerful tails.
• Capable of forming a Tailed Beast Bomb in his mouth. 19 20

Personality

Isobu prefers stillness and is described as the gentlest of the Tailed Beasts. 19 20 However, he becomes violently destructive when provoked or attacked, reacting with anger toward those who attempt to capture, restrain, or control him. 20

Abilities & Skills

Exceptional Defense

Isobu possesses the strongest defensive capabilities among the Tailed Beasts.

• A combined assault from dozens of Kirigakure shinobi failed to break even a single spike on his shell. 20
• Sustained Water Style and other ninjutsu bombardment achieved almost no effect. 20
• His defensive durability forced Yagura's forces to rely on disruption and sealing rather than direct defeat. 20

Tailed Beast Chakra

Isobu can gather massive quantities of chakra for large-scale attacks.

• Compresses Yin and Yang chakra at a 2:8 ratio to create a purple-black Tailed Beast Bomb. 20
• His incomplete Tailed Beast Bomb detonated inside his mouth after Yagura struck him, launching a towering column of water and causing a massive explosion. 20

Mental World

Isobu possesses a mental space connected to his jinchūriki.

• His internal world appears as an azure lake, where his consciousness takes a smaller form. 19
• After being sealed into Yagura, he resides behind a barred gate within their shared mental space. 20
• His mental defenses were highly vulnerable to the overwhelming Eye Power of a Mangekyō Sharingan. 19

Relationships

• Uchiha Chen — First used Mangekyō Sharingan genjutsu to overwhelm and manipulate Isobu's consciousness; later gained control over the Three-Tails through Kotoamatsukami. 19 22
• Uchiha Obito — Invaded Isobu's mental world and bound his consciousness with ocular-power chains in an attempt to claim him. 19
• Karatachi Yagura — Captured Isobu and became his jinchūriki, intending to become a perfect jinchūriki and use the Three-Tails to strengthen Kirigakure. 20
• Kirigakure Sealing Team — Restrained and sealed Isobu after Yagura disrupted his Tailed Beast Bomb. 20

Notable Quotes

“Roar! You detestable human!” — Isobu to Karatachi Yagura after being sealed 20