Aoi Rokushō

appeared as a minor character in the Naruto anime. He was a jōnin from Amegakure, and a missing-nin from Konohagakure.

Background
A former instructor in Konoha, he convinced Idate Morino, his former pupil, to steal the legendary lightning chakra sword called the "Sword of the Thunder God," which had once belonged to Tobirama Senju, the Second Hokage, along with a Scroll of Seals. Idate was tricked into believing that this would grant him advancement to chūnin. Once the sword was in Aoi's hands, he fled the country with Idate, who was ashamed of his actions, and they went to Amegakure. When Ibiki Morino and two ANBU members caught up with them, Aoi had the ANBU killed, and Ibiki ended up captured by the Ame ninja, where Aoi then tortured him to read the scroll. Idate escaped under Ibiki's advice as Aoi attacked Ibiki; Ibiki escaped as well. Aoi then managed to become a jōnin of Amegakure.

Senbon and Poison
Aoi's signature technique was the Senbon Shower, and he combined the technique with poisoned senbon. This gives his opponents both a slow and painful death, along with the damage done by the senbon themselves. Along with using his senbon with his umbrella, he also uses them as a regular ninja tool; not incorperating it with ninjutsu. The bare poisoned-senbon give him an advantage, as the senbon's poison paralyzes his opponents.

Sword of the Thunder God
This sword was stolen by Idate Morino, who was tricked into giving it to Aoi. The sword has the ability to manipulate lightning, and was able to hold back the effects of a Chidori. Aoi can electrify and paralyze his opponents with this sword, and make trails in front of him, to shield him from frontal attacks.

Land of Tea Arc
Aoi and Team Oboro were hired by Kyūroku Wagarashi of the Wagarashi Family to prevent Idate from winning the Todoroki Shrine race, and to make sure that Fukusuke Hikyakuya won the race. If Idate had lost, Jirōchō Wasabi and the Wasabi family wouldn't have controlled the Land of Tea any longer. A few messagers were going to the leaf village, and get ambushed by Aoi. The messagers draw their weapons, and try to decapitate Aoi, but result in removing his forehead protector. Aoi lands on the ground, and uses his Senbon Shower technique, to stab and cut the messagers with senbon. The messagers continue stuggling to take the letter to Konoha at all costs.

Team Oboro then meets up with Aoi, asking for instructions. The team is ordered to follow Idate, while Aoi goes to Fukusuke. Later, Aoi and Fukusuke are on a ship, observing the Idate run away. Aoi claims that he has always been like that, supprising Fukusuke about Aoi knowing Idate. Aoi continues to steer the ship. Soon, after Team Oboro destroyed Idate's ship, Idate is told to swim away from it. As soon as Idate got to a rocky island, Aoi walked up to him, suprising Idate about Aoi's appearance.

Aoi then injures Idate's arm. He then throws his umbrella up, and stabs Idate with many poisoned senbon. It begins to rain, and Idate is on the floor, stuggling in pain. He drops his pocket knife, and Aoi heads to it. In attempt to grab it, Idate shoves Aoi's hand from the knife, angering him. Aoi begins to kick and step on Idate, leaving him with more pain and despair. Naruto Uzumaki, Sakura Haruno, and Sasuke Uchiha finally arrive to Idate's rescue. Aoi, being arrogant claims that no matter how many Gennin Ninja were teamed up against a Jonin, the odds of the Jonin wining won't change. He then dodges many frontal atttacks comming from Naruto and Sasuke, jumps up in the air, and uses his Senbon Shower Technique on Squad 7, and Idate. Aoi then attacks the team with many posion senbon, whos effects were healed by Tsunade's antidote.

Aoi is now along side Fukusuke. He threatened to kill him for taking Aoi lightly. He then fights Naruto, and Sasuke. Idate tries to help, but keeps on getting electrocuted by Aoi. Sasuke then uses Chidori to make a crack on the blade, but ends up being electrocuted, and nearly killed by Aoi, as he was thrown head-first down a cliff. Sasuke was saved by Sakura. Naruto then fights Aoi, and defeats him with a Rasengan; Naruto broke through the blade by using his Rasengan. Once the Rasengan hit Aoi, it sent him flying down the cliff, presumably killing him.

Trivia

 * means blue or green, and means copper rust.
 * He is the only Ame ninja so far in the series to have a surname.
 * Despite being an anime-only character, Aoi's impact on belittling Sasuke Uchiha served to advance the obsession of the latter to defect from Konoha.
 * He also made an appearance as a boss in the Xbox 360 video game Naruto: The Broken Bond.
 * He and Mizuki share similar traits:
 * Both feign friendliness to better deceive others.
 * They both tricked their respective "students" (Naruto Uzumaki and Idate Morino) into stealing an item in order to "promote" them. Naruto: Scroll of Seals to become a genin and Idate: the Sword of the Thunder God and a forbidden Scroll to become a chūnin.