Koiruwani

Koiruwani is a crocodilian, and the personal summon of Utakata. He is a large, limber, semi-aquatic crocodile. He is first seen during Utakata's battle with Sasori, where he protects Utakata until he is dismissed upon Sasori's apparent death.

Abilities
Besides the obvious strength and ferocity of a large crocodile, Koiruwani has the ability to coil himself around people, either as an imprisonment or a shield. He can also use a special jutsu which makes the earth before him ripple, striking foes.