Fūshin

was the head of the Lightning Group.

Background
Fūshin was born on a poverty-stricken island in the Land of Water. As a child, he was ostracised for his strong abilities and was blamed for being responsible for a typhoon that destroyed his village. He was sold to a businessman named Kawabi, and endured torture and starvation by his owner. At the Coliseum, he fought against Chino but was defeated when he fell victim to her Ketsuryūgan genjustu. Fūshin was initially hostile towards Chino for winning against him but they became close friends after bonding over their mutual loneliness of being mistreated for their abilities and having no families. Fūshin also tells Chino about his past, something he has never shared with anyone. Fūshin helped Chino, Karyū, and two others escape so he could help Chino get to Valley of Hell. He became the leader of the Lighting Group, a group who steals money from bad people and gives it to those in need. Fūshin and his team helped the people of the Bamboo Village.

After the group was betrayed by Kirigakure, they asked for shelter in the Bamboo Village, who refused to harbour them in fear of retaliation. The group dissolved, with Fūshin and Chino proceeding towards the Valley of Hell, where they found evidence that Chino's clan had died a long time ago. Two Kirigakure shinobi attacked them before being turned into exploding humans by Chino, who vowed revenge.

Appearance
Fūshin is a man with long green hair and yellow eyes. He is seen wearing a dark hooded cloak and has a scar under his left eye.

Sasuke Shinden: Book of Sunrise
Sasuke goes to the Coliseum with Orochimaru to gain information on Fūshin and the Lightning Group because he suspects Fūshin is involved in the disappearance of missing shinobi from Konoha, Kumogakure and Kirigakure. Although he learns the background of Fūshin and his group, Sasuke never meets Fūshin because his whereabouts are unknown and later finds out Fūshin is not responsible for the disappearances.

In the anime, however, Fūshin is revealed to have been helping Chino create exploding humans in order to find and kill Sasuke. To not draw suspicion, Fūshin hires Karyū to pose as him, and he alters his appearance and uses the alias Nowaki. However, Sasuke discovers this deception and confronts Nowaki, who reveals himself to Sasuke. They fight, with Fūshin's Typhoon Release being strong against Sasuke's Susanoo. However, Sasuke wins by jumping in the hole of the funnel and hitting Fūshin. Fūshin escapes when Sasuke is unable to get information from him.

Fūshin later appears after Chino loses in a fight against Sasuke. He offers Sasuke to kill him so that Chino will be spared but Chino asks him not to because his death would leave her alone for good. Both surrender and are arrested. Afterwards, they are offered by the Mizukage to work for her in order to atone for Kirigakure's betrayal, which they accept.