Shukaku Location: Hidden Sand
Classification: Demon
Tail Number: Ichi (One)

Type: Tanuki (Raccoon Dog)
Imbued Within: Gaara
Tea Kettle
Shukaku is one of the "bijuu", a tailed beast of the ancient world. Seeking a way to create a ninja with a large amount of chakra that would be an unstoppable machine, the Kazekage imbued Shukaku within his unborn son.
Shukaku was said to be the corrupted spirit of a Sand priest who was imprisoned within a tea kettle. Current information suggests Shukaku is a "bijuu", one of the tailed demons of the ancient world. He has been in the possession of Hidden Sand since ages past. When Karura became pregnant and had Shukaku imbued into her son, she cursed the village for what they had done. When Gaara was later born she lost her life in the process. Gaara grew up confused and angry at his place in the village, as all the villagers feared him and his power to control the sands. When Gaara grew older he gained the ability to enter into a forced sleep, which would allow Shukaku to come out. Shukaku would gather sand from the surrounding area to make his large tanuki body. Shukaku seems to be fairly loud and flamboyant in his speech, probably as a result of not being released very often.
The Akatsuki criminal organization sought to obtain Shukaku from Gaara for their own diabolical ends. Demon imbued persons are called "jinchuuriki" by Akatsuki, literally "the power of human sacrifice". This seems to stem from a life being lost when the demon is imbued into the individual. For Gaara, his mother lost her life to imprison Shukaku. When Akatsuki captured Gaara they took him to their cave in the River Country and placed him before their large statue. They then performed a jutsu which seems to withdraw the Shukaku spirit from out of Gaara's body.Hidden Village: Sand
Rank: Kazekage
Bijuu: Shukaku the Ichibi (One-Tailed Demon Tanuki)
Power: Mini-Shukaku form ~ protective sand tanuki form, automatic sand defense
Drawbacks: If Gaara sleeps Shukaku can take control
Status: Captured and extracted by Akatsuki
Info: Chiyo imbued the demon Shukaku into the Kazekage's son Gaara. Gaara lead a lonely life until he met Uzumaki Naruto. He pledged himself to prove his worth and protect his village. His drive led him to become Kazekage. He was defeated in battle by Deidara and Akatsuki removed the Shukaku demon from within Gaara, killing him. He was later revived by Chiyo, but he was no longer a Jinchuuriki. He retained some sand control powers however.
Shukaku
The Bijuu
History and Myth
The tanuki is species of dog found in Japan. The species has been called "raccoon dog" because of their similar appearance. The tanuki has been renowned for its mischievous nature and ability to shape shift and bring good fortune. The Naruto Shukaku has ties to several tanuki archetypes. One is the Bunbuku Chagama tale, where a tanuki transformed into a tea kettle. In the series Shukaku was reported to have been sealed within one. Some tales state of shrine priests being tanuki in disguise, which ties into how early in the series Shukaku was reportedly a corrupted Sand priest.
Chiyo Chiyo is an elder Sand kunoichi who sealed the Shukaku demon in Gaara under the direction of his father the Yondaime Kazekage. Chiyo previously helped seal the one-tailed demon into two Sand ninja and assisted in its removal when the time came.
Kettle
Early in the series Shukaku was said to be the corrupted spirit of a Sand priest. We now know he is actually one of the tailed demons of the world. Shukaku the one-tail has been in three Sand ninja total. One of his previous hosts inspired Sandaime Kazekage in his usage of iron sand. Shukaku provokes insomnia in his host vessels, should they sleep Shukaku will eat away at their personality. When the host is awake, Shukaku's powers are limited. If the host builds a new Shukaku body and falls unconscious, the demon can run riot once again. Shukaku is loud and flamboyant in his speech, probably as a result of not being released very often. With his capture by Akatsuki, it is unknown what lies in his future.
Influence
Appearance
Shukaku lied dormant within Gaara but could operate freely when Gaara slept. Because of the dangerous nature of Shukaku in this free wheeling state, Gaara went without sleep. As a result his eyes become dark and discolored. Stylistically this enhanced his ties to the tanuki, as the species has a dark area around their eyes.
Other features which cause Gaara to resemble a tanuki is the gourd on his back, many depictions of the tanuki feature a gigantic gourd-shaped scrotum which it sometimes slings over its shoulders.
Gourd
Benefits
Automated defense: Gaara's utilization of the one-tailed Shukaku demon takes several forms. The sand demon provides Gaara with an automatic shield defense, protecting him from strikes. The automated defense is limited in speed though, a fast enough attack can reach Gaara's body before the sand can catch up to defend.
Power: Using his own chakra to encase his foes in sand, Gaara would constrict and crush his opponents. In turn their blood would strengthen Shukaku. When the sand returned to Gaara's gourd, the blood of the victim would be mixed in. The exact reason why the blood strengthened Shukaku is unknown.
Jinchuuriki-Bijuu Form
Shukaku Utilizing the sand from his Gourd and the surrounding area, Gaara would cover himself to attain his "perfect" form. To prepare him for this state, Gaara would enter his sand cocoon. When prepared, Gaara would emerge as a small version of Shukaku. This "mini-Shukaku" form allowed Gaara to hurl sand shuriken and use techniques such as Mugen Sajin Daitoppa. The final perfected version is a large scale usage which allows Shukaku himself to emerge and run rampant. Gaara will first gather a gigantic amount of sand into a large-Shukaku form. He will then use the Feigned Sleep technique to fall unconscious an allow Shukaku to control the large sand form. This form was said to have horrified Temari, and been the cause of much destruction in the past.
Shukaku
Other Shukaku Influences
Shukaku Beyond being used to cause much destruction while he himself is asleep, Gaara uses techniques which show the influence of Shukaku upon him. These include the set-up for Sabaku Rou with its Shukaku claw-esque tendrils and Shukaku no Tate, said to be Gaara's Saikou Zettai Bougyo (Supreme Absolute Defense).