Toroi was a famed Kumogakure shinobi. In preparation for the Fourth Shinobi World War, Toroi is reincarnated by Kabuto Yakushi to fight against the Allied Shinobi Forces, before being mobilised alongside Gari, Pakura, Haku and Zabuza Momochi. Separating from this group at some point during their relocation, Toroi is later discovered trailing Musai and Nonota, with numerous shuriken in hand and scroll in mouth. Identified by the Kumo-nin, who attempts to alert his ally to the best method to not fall victim to his Magnet Release, Toroi goes on the offensive. Despite the pre-emptive warning, the unaware Suna-nin still falls foul of the attack and is evidently terrified as the details of the technique are disclosed. Prepared to conclude the battle using even larger shuriken, Toroi is ambushed from behind by Naruto Uzumaki wielding a Rasengan, before being sealed by the previously panic-stricken Suna-nin. Later, with the release of the Impure World Reincarnation technique, a light of sorts encased Toroi's sealed body as the technique was dispelled and his soul was returned to the afterlife. (Source: Narutopedia)
Kyuusuke (鳩助, Kyūsuke) was once a shinobi from Amegakure and one of the original founding Akatsuki members. (Source: Narutopedia)
F is a Kumogakure shinobi. During the Fourth Shinobi World War, F was attacked by a White Zetsu Army clone on the battlefield and was later impersonated by this clone. It is unknown if the real F is still alive. (Source: Narutopedia)
Shukaku is the demon that is in Gaara giving him most of his power and his insanity. Shukaku is able to fire off sand chunks that look like and act like kunai. In the English dub, Shukaku is made sounding like an insane cowboy. Shukaku is the Ichibi, which is the One-Tail Jinchuriki. Shukaku is very powerful as Gaara can still not fully control him.
Tsunami is the daughter of Tazuna and the mother of Inari. Her husband died shortly after Inari's birth, and when Kaiza entered her life as a father figure for Inari, she couldn't help but invite him into her home. Like everyone else in the city, Kaiza's death broke her spirit. In the years following, she tried to protect Inari from the painful memories of the loss of his friend and mentor. Land of Waves Arc Tsunami is a woman of strong will; when she is taken hostage by Gat�'s men to threaten Inari, she threatens to commit suicide so that Inari doesn't need to worry about her. Before she is placed in a position that would force her to go through with her threat, Naruto Uzumaki saves her and Inari.
Giichi worked for Tazuna as a construction worker on his bridge. Though Giichi worked longer than many other crew members, he too quit after fearing for his safety.