Unmo Samidare

was a jōnin from Kirigakure.

Background
Unmo was known for his animosity against Konohagakure, and therefore, Root deemed him a potential threat to the village. As such, Sai was dispatched to assassinate Unmo.

Appearance
Unmo was a man with round eyes (in the anime, they were more like wide snake-like eyes). He wore a bandanna with the Kirigakure's metal band on it, and the village's standard flak jacket with a black shirt underneath.

Personality
Unmo was known for his strong feelings against Konohagakure.

Abilities
Although his abilities remain unknown, Yamato claimed that Unmo wasn't one to be defeated easily.

Trivia

 * Unmo was introduced in Sai's Bingo Book when Yamato was looking at his belongings, with his name on the top-left corner of the page. In the manga, the name was unclear, but was shown in the anime.
 * His appearance differs between the manga and anime.
 * means "early summer rain".