Shizuku was a kunoichi who hailed from the Land of Demons. Shizuku is shown to be a graceful fighter with maneuvers of a rhythmic gymnast. Her primary battle tactics while under the influence of Yomi's dark chakra revolve around water-chakra. She can easily create large scale jutsu that can overwhelm the entire area or attack from huge distances. She can also move at great speed with little effort by gliding on a stream of water. If faced with a life-threatening attack, she can turn herself into water. Shizuku is the lone female member of Yomi's team on a quest to release M�ry�. During the first encounter with Naruto and his team, she demonstrated impressive fire-chakra skills that nearly killed Naruto. During the second battle, Shizuku performs the initial attack to separate Shion from her protectors by attacking them with an enormous Water Dragon. Neji is surprised to see that she has such tremendous mastery of water-chakra because he detected no such chakra in her during the previous fight.
One of Shion's most loyal bodyguards.
Nigi's childhood friend and a member of kendo club.
She sacrificed herself in order to seal away M�ry�. Miroku wanted Shion to live a normal life and prevented her from learning about her true powers, and as such prevented her guards from teaching Shion any ninjutsu. But to protect her daughter, she left Shion a special bell which allows Shion to foresee her own death in the future and be able to prevent it. However, to save Shion's life, another one must usually be sacrificed in her place.
Kushina Uzumaki is a ninja of the former Land of the Whirlpool. She had a son, Naruto Uzumaki, with the Hokage of the time, Minato Namikaze. She is noted to have had a brash, tomboyish demeanor, long red hair, violet eyes, and as time passed, blossomed into a very beautiful woman. Despite Naruto's close resemblance to his father, much of his personality and choice of ninjutsu are said to be similar to that of his mother's. She is presumed to be dead, as she is described in past tense. Her face is shown in a couple slides as she is talking with Jiraiya and Minato Namikaze. In this part of the manga Jiraiya is lying on the ground while having flashbacks. In his flashbacks he is with Minato and Kushina as they are naming their unborn child "Naruto".
The Fire Daimy� has a fickle and indecisive nature and is easily swayed in his decisions through biases as well as external influences. When situations call for fast, important decisions, he makes his advisers do the whole work: the one who convinces him most is the "winner". He seemingly had a liking for Jiraiya, wanting to choose him as the next Hokage, and was also impressed by Kakashi Hatake's reputation. (Source: Naruto.wikia)