Suien

is a missing-nin from Takigakure who débuts in Mission: Protect the Waterfall Village!.

Appearance
Suien had long spiky hair, dark eyes, and a goatee. He wore a dark blue jacket, grey pants, sandals, and a bandanna that held his hair out of his face.

Abilities
He was shown to be proficient in Water Release techniques as well as Takigakure's Hidden Techniques. Suien was a highly skilled shinobi evident in the fact that he was trusted with teaching Shibuki and defeating him despite being under the effect of the Hero Water. Suien was also shown to be able to use his chakra as shield to deflect kunai from himself while fighting Naruto and Sasuke under the influence of the Hero Water.

Plot Overview
Suien was the teacher of Shibuki. He went rogue as a missing-nin and assembled followers like Hisame, Kirisame, Murasame, and a substantial number of grunts in his plan to obtain the chakra-enhancing Hero Water, even if it meant taking hostages in Taki. He threatened to kill the captive villagers one by one if Shibuki didn't show himself with the Hero Water. When Shibuki drank the water and hid its bottle in his shirt, he engaged Suien in battle until Suien impaled Shibuki with a water sword technique and discovered the water falling out of his shirt. After Suien drank it, Naruto engaged him in battle long enough for Shibuki to free Sasuke.

Naruto and Sasuke then fought him, but Suien was winning until Naruto unleashed the chakra of the Nine-Tailed Fox. After Naruto drew on the fox's chakra, Suien was no match for him, and thus he tried drinking the last of the water. Before he could do so, Sasuke knocked the bottle of the water out of his hand, breaking it. Naruto then used multiple shadow clones to send Suien flying, causing him to fall down the waterfall to his death.