Orochimaru

Name: Orochimaru
Age: 50
Birthday: 27 October
Zodiac: Scorpio
Rank: S class missing nin; one of the Legendary Sannin
From: Leaf
Teacher: Sarutobi - Sandaime Hokage
Teammates: Jiraiya, Tsunade
Student: Anko
Side-kick: Yakushi Kabuto
Summons: Snakes
Loves: Little boys
Goal in life: Learn all the jutsus in the world
Our sneaky suspicion: He's gay

Background: The crazy one from the Legendary Sannin. Sarutobi's favourite student, who cracked after he was rejected from the title of Yondaime Hokage. He went into weird experiments that involved killing alot of people to create new jutsus to make himself immortal. He was exiled from the Leaf and later founded his own village.

The Deal with him: Sarutobi had noticed the malice and ambition in his snakey eyes even when he was just a genin. But the Hokage believed he could change Orochimaru as he saw much potential in him. It was a failed investment. Not only did Orochimaru grow up to be a twisted crazed psychopath, he also ultimately killed his teacher, but at the cost of losing the use of his hands/jutsus.

Orochimaru is a sore loser. He hankered after the title of the 4th Hokage, but after losing it to Yondaime, he claimed only idiots would want to be Hokage and sought to destroy the village.

His accomplishments are the founding of the Hidden Village of Sound, with the main objective being to destroy the Leaf (why? because he's a sore loser); developing malicious jutsus with one of them being to move his soul into somebody else's body so he could stay immortal, and biting people's neck to give them cursed seals. His current investment is Sasuke, whose Sharingan that can copy others' moves he is actively lusting after.