Birthday: 08 February
Rank: Hokage (Sandaime)
Teachers: 1st and 2nd Hokage
Students: Jiraiya, Tsunade, Orochimaru
Family: Konohamaru (grandson)
Background: 3rd Hokage of the Hidden Village of the Leaf. Teacher of the 5th Hokage.
The Deal with him: Sarutobi sensei is almost like a kind grandfather to the villagers of the Leaf. He was chosen to be the 3rd Hokage when he was just a child by the 1st and 2nd Hokages. He goes by the nickname of "Professor" for learning over a thousand jutsus. Some says he's the most powerful Hokage when he was in his prime.
After the 4th Hokage was chosen, Sandaime decided to retire. He was however forced out of retirement when Yondaime sacrificed himself while protecting the Village against the Kyuubi.
Even at the age of 68, Sarutobi still intended to be the Hokage for another 5 years or more. But his life was rudely interrupted by his former favourite student Orochimaru, who lost a screw after he wasn't chosen to be the 4th Hokage. Vengeful against the Leaf which exiled him, he came back to destroy the village and to kill his teacher. Sandaime was killed in the battle with Orochimaru and the 1st and 2nd Hokage (which Orochimaru brought back to life to aid his fight). Before he died, he took away the use of Orochimaru's hands.