Demonic Statue of the Outer Path

The is a personal summon of Nagato.

Appearance
The Demonic Statue is a giant, stone creature. When summoned it bursts from the ground, with only its upper torso and arms visible. Its back has a number of rocky protrusions. When it is first summoned by Nagato, the Statue is wearing a blindfold. During subsequent Akatsuki appearances, nine slots for its (normally closed) eyes are present in the blindfold. In these appearances it arms are also bound in shackles and it has a bit in its mouth, similar to the one in the mouth of the Death God summoned from the Dead Demon Consuming Seal.

Role
Nagato first summoned the Demonic Statue during his battle with Hanzō and his forces. As soon as it appears it pierces him with a number of Chakra Disruption Blades, causing Nagato to become emaciated. Nagato uses it to annihilate Hanzō's men.

Years later, the Statue becomes the means behind Akatsuki's tailed beast extraction. Nagato summons the Statue and the other Akatsuki members then convene and, over a period of three days, extract the tailed beast from its jinchūriki and seal it into the Statue. As the sealing nears completion, one of the eyes corresponding to the beast that is being sealed opens. When the sealing is completed, the bit falls from the Statue's mouth.

Thus far the Statue has had the first seven tailed beasts sealed into it. The Nine-Tailed Demon Fox must be sealed into it last, or else the Statue will be destroyed. After Nagato's death, Madara Uchiha indicates that Nagato was just a pawn that the Demonic Statue had been synchronized with. He states he would like Sasuke Uchiha to be Nagato's replacement, but will wait until Sasuke can be manipulated easier.

Abilities
The Statue is able to emit dragon-like forms of energy from its mouth. When these dragons come into contact with ordinary humans, the humans' souls are ripped from their bodies, killing them. When these dragons surround a jinchūriki or a tailed beast, the tailed beast's chakra is gathered to the Statue's mouth and stored inside for future use. Nagato wants to use these beasts to create a weapon that could destroy a country. Madara wants to reassemble them into the Ten-Tailed Beast.

Kisame Hoshigaki has noted that the Nine-Tailed Demon Fox must be sealed last, because it would cause the statue imbalance of power, resulting in it's destruction.