Background: Kokukozu was outlawed ever since he was a child. His mother, Koukatsu, was one of the most skillful spies in all of Takigakure. On a mission, during the Third Great Shinobi World War, she was to speak with the Third Hokage, Hiruzen Sarutobi, about peace between the two villages of Amegakure and Konohagakure, but was murdered by Museidenkou, mistaking her for an ANBU member. Kokukozu's father later joined the Land of Iron's Military Force when he was seven and ran away for unknown reasons.

He had to rely on scraps to survive in the Land of Iron, but, the Land of Iron's Military Leader, Mifune, never noticed once. When he became fourteen, Kokukozu was told of his mother's fate by a young, masked man and how amazing of a spy she was. This gave Kokukozu meaning, his new goal was to become the greatest spy in the world, surpassing his incredible mother. To start this off, he began to work for Mifune, but was, unfortunately, fired, as a spy was no longer needed.

The young man, Rokubi, came by once more to ask him if he'd like an immortal being of a new dawn. Kokukozu obliged and became the new spy of the re-established Akatsuki.

It is a mystery how he became the Sixth Mizukage, although rumors say that it was because the Fifth Mizukage had resigned and decided to give up her seat to someone else due to the powerful infliction brought upon her by Kanjou.

Personality: Kokukozu is quite similar to Kisame Hoshigaki and Suigetsu Hōzuki, but not as cocky. He mildly respects his opponents, but also offends them quite a bit, possibly to see what they can do while in a frustrated state.

Appearance: Kokukozu seems to be as knowledgeable as Kanjou was, but just a tad cockier. He usually wears a blue outfit with only one armhole while the other side is completely open, and under it he wears the recommendatory Akatsuki cloak, along with sandy brown shorts. He has also worn a blue t-shirt, with two armholes, and two, off-white scarves, and the same shorts to the Kage Summit. His skin is particularly gray and his messy hair (Similar to Kakashi's) is white.

Abilities:

Chakra

Kokukozu seems to handle Chakra just as well as Kanjou and Rokubi, although he does have a limit, unlike Rokubi. Fortunately, though, he can use Sage Chakra to give him a bit of a boost.

Summonings
Kokukozu seems to be elite when it comes to Summoning Jutsu, since he has shown no signs of difficulty.

Sage Mode

As one of the Five Great Sages, he seems to exceed Naruto in Sage Chakra. It is unknown how much stronger he becomes when activated, but it seems he is unable to harm the Scorpion Sage even with it activated. Apparently, Kokukozu's Sage Mode can peek into the future and see oncoming attacks, similar to how the Sharingan detects oncoming attacks.

Jutsu: Too many to list, here's a URL:

http://narutofanon.wikia.com/wiki/Kokukozu_Suishitama#Jutsu