Kumonosu

Kumonosu is a sound ninja from Otogakure and specialises in Storm Release and Steel Release

Tora Arc
During Tora Arc, Kumonosu and his team-mates go to Konoha to take revenge on Kakashi. He fights Sai and Udon in the Forest of Death, he is easily defeated and killed by Sai and Udon combined jutsu Fire Poison Mist.