Kin Tsuchi is Zaku and Dosu's team mate. Ino took over Kin's body to see if the other two would give up.

Kin was the one that grabbed Sakura's hair, telling her she could never win (and thus the one that made Sakura cut her hair off). Kin was also the first one unconscious.

Kin uses needles with bells on them and then pulls a string which causes the opponent to become paralyzed and see illusions.

Kin was one of the sacrifices for the Second Hokage.