Princess Kaguya Ootsutsuki (大筒木カグヤ, Ōtsutsuki Kaguya) is the mother of Hagoromo Ootsutsuki and Hamura Ootsutsuki, who consumed the fruit of the Shinju and became the progenitor of chakra and part of the creation of the Ten-Tails. (Source: Narutopedia)
Butsuma Senju (千手仏間, Senju Butsuma) was a member of the Senju clan during the war-torn era preceding the era of hidden villages. (Source: Narutopedia)
Tajima Uchiha (うちはタジマ, Uchiha Tajima) was a member of the famed Uchiha clan during the war-torn era, preceding the era of hidden villages. (Source: Narutopedia)
Yakumi Uchiha was a member of the Uchiha clan during the years preceding the Uchiha Clan Massacre. As a member of the Konoha Military Police, he assisted Fugaku Uchiha. He felt a strong affection toward the Uchiha clan and was fiercely loyal to it. (Source: Narutopedia)
Gouzu and his brother Meizu 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 all their hope. They bothy 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.
Dengaku is a food stand merchant in the Fire Country who sells a variety of things. His stand was where Tsunade drank sake with Jiraiya before she met with Orochimaru.
Ami (亜美) was an Academy Student from Konohagakure. She appears during a flashback to Ino Yamanaka and Sakura Haruno's time in the Ninja Academy. During a kunoichi lesson she taunts Sakura about her forehead, prompting Ino to throw a flower (that she claims is poisonous) into Ami's open mouth. Ami quickly runs away to tell their teacher, Suzume. She has purple hair in a style similar to that of Karin. (Source: Narutopedia)