Kotetsu Hagane

Kotetsu Hagane
Kotetsu Hagane is a speacial Jounin from the village hidden in the leaves (Konohagakure)

During the Chuunin exam first test, he was sent to test the Genin by casting a Genjutsu, which made the Genin see the second floor as the third. Later on the third test, Kotetsu and Izumo watched over the Chuunin exam, giving feedback on the Genin's qualities.

After Tsunade became Hokage and Izumo and Kotetsu served as her assistants, Kotetsu stated Tsunade as "a real slavedriver", a trait which Tsunade really has. After the timeskip, Kotetsu, Izumo, Shikamaru and Asuma served as a team to track down Akatsuki duo Hidan and Kakuzu, but ended up as the death of Asuma and losing the battle.