Meizu and his brother Gouzu formed the Demon Brothers. They were hired by Gato to kill the Bridge Builder, Tazuna, and therefor stoping the work on the bridge from the Land of Waves, making all of the Wave Country's citizens lose their hope. They both attacked Tazuna, who was guarded by Team 7. After a little quick battle, they were tied up to a tree and left there. The Demon brothers are a paragon of coordination attacking. Their large metal gauntlets house a retractable shuriken chain running between the two of them, which they can use to bind an enemy and then slice them to pieces. In the event that the shuriken chain is neutralized, they also have a release mechanism, to free them up for individual attacks. They use the sharp, poisoned claws on their gauntlets to shred their foes. As Kirigakure Chunin, they are renowned for their fighting resolve.
Genzou serves as the photographer at the Ninja Academy.
Kazabune sold balloons in a smal stand near a men's club. When Jiraiya struck Gantetsu with a Rasengan, he went flying into Kazabune's stand. To pay for the destruction, Jiraiya took Gantetsu's wallet and gave it to Kazabune.
Tanzou was a Genin from Hidden Leaf who particpated in the Chuunin exam. He and his teammates made it to the second test of the exam. While he was off finding food, his teammates decided to open their Heaven scroll. Unfortunately this served to automatically disqualify the team. When he returned he found his teammates Minoji and Shibire knocked out and their exam over.
Kusabi worked as a mercenary for the shipping magnate Gat�.
Kuromaru (黒丸) is the canine companion of Tsume Inuzuka. Kuromaru has a wolfish appearance and is missing his left ear and right eye. As his name suggests, his fur is black. He is able to talk. He helps Tsume protect Konoha during both invasions of the village. (Source: Narutopedia)
Zaku Abumi was a Genin-level ninja from Otogakure. He was part of the team that took the Chunin exam in order to assassinate Sasuke Uchiha. Like many Sound ninja, he has been physically altered with unnatural enhancements that enhance his abilities; in his case, he was fitted with hollow air tubes that extend through his arms and open through his hands, allowing him to propel a combination of air pressure and sound in various ratios, controlled by his chakra. Unlike his partners, a glance into his past and how Orochimaru recruited him was given, making him a far more dramatic character. The anime shows that he was an orphan living on the streets who hustled by stealing for a living, and was almost always beaten for it. Orochimaru had told him he had potential and liked the strength in his eyes. He refuses to give up, even at the cost of his own life. After saving his partner Dosu from Rock Lee's lotus attack, he brutally fought off Sakura who attempted to prevent him from killing Sasuke. After the helpless Sakura lay beaten on the ground, he and his team had to fight Team Asuma. During the fight, Sasuke finally regained consciousness, and asked Sakura who had injured her. Zaku took the credit, and Sasuke proceeded to dislocate and greatly injure Zaku's shoulders. He was the only Sound ninja to fight Sasuke, as the others retreated. During his fight with Shino Aburame in the preliminary exams, he overcame the injuries to his shoulders and was able to use his arms to defend himself against Shino. Due to his cockiness, he attempted to attack both Shino and his approaching army of Kekai insects, not noticing that the chakra-eating bugs had already filled the tubes in his arms, preventing him from attacking and even more brutally crippling and preventing him from doing any damage in the future (In the manga, his right arm was blown off due to the kikai bugs Shino used to fill up Zaku's air tubes, and the left was kept intact but halfway sliced. In the anime both of his arms are left intact, but have numerous holes in them, achieving the same, albeit less gruesome, result). Dosu says he would avenge him (or rather, his severed arms), but failed to do so. Zaku, along with Kin Tsuchi, is later murdered as a sacrifice for Orochimaru's Impure World Resurrection for the First and Second Hokages against the Third Hokage. (Source: Narutopedia)
