Kabuto's Sensei

Part I
Ohiko Date is a shinobi from Konohagakure and was the Jonin of Kabuto's Genin Team during the Chunin Exam. Kabuto's Genin team were all actually spies for Otogakure, though it's unknown if he himself was a spy as well, but when he is seen during Hiruzen Sarutobi's funeral, the look on his face suggests otherwise.

Part II
He reappears in a four-man group, searching for the Akatsuki members Kakuzu and Hidan.