Kaname Kuran (玖蘭 枢) is a pureblood vampire, who saved Yuki Cross from an attack by a Level E when she was five years old. Kaname is one of the main male protagonist. Prior to his re-awakening, Kaname was the ancestor of the Kuran family. He is born in the year of the Rooster. His height is 184 cm (6'1") and shares a similar appearance with Haruka and Rido Kuran.

He is normally a stoic and authoritative individual, but is very kind, warm, and gentle to Yuki. This disposition bothers both Yuki and the Night Class vampires, who do not understand his favouritism towards her. He is very strict and often imposes discipline in a fierce way, yet he is indulgent to Yuki. Kaname has acknowledged to Rido that he has a contrary nature, which leads him to both desiring to lock Yuki up and keep her to himself and alternatively, to watch her protectively while encouraging her to be herself. Kaname never hides the fact that he is not interested in anything else but Yuki’s welfare. Every action he makes is towards one goal, and that is Yuki’s safety, his greatest fear is losing her. He is very determined to have Yuki live for all of eternity by his side and not only deeply fears losing her because of the ten years she spent as a human, but because of the mysterious loss in his past. He seems to frequently plots things in secret making him rather secretive and mysterious. Kaname sacrifices everything for her, he wanted her to at least stay by his side even if she rejected his sins and later refuses to reject her and declared he would rather die than lose her, to show how deep his love for her is.

Kaname Kuran is the class president of the Night Class, both feared and respected by the other Night Class students. While he is cold and authoritative towards his contemporaries in the Night Class, he is always kind and sweet to Yuki. Kaname has shown that he cares for Yuki in a romantic sense and that he had fallen for Yuki ever since they were children. He wants to be closer to her, but senses how shy she is about it. Since he adores her, she is reluctantly accepted by the Night Class. He has attempted countless times to expand intimacy with Yuki. He is also Yuki's fiancée and Yuki knows him as her brother. He shares the Chairman's goal of peace between vampires and humans. He worked with the Chairman to create the Night Class at Cross Academy and with his presence, allows the Night Class to be kept in check. But the real reason Kaname agreed to attend the academy is so that he can be near Yuki and protect her.

As a Pureblood, Kaname is capable of controlling lesser vampires, but he chooses not to exercise his powers, thus earning the respect of the Noble vampires. In the fanbook it is stated that he is all powerful. Even his shadow mirror is capable of beating up another pureblood, he can create different shapes that monitor Yuki, such as a wolf or bats.

Kaname is the ancestor of Kuran, one of the originals vampires. During his original time, he despaired to such great heights, he chose to lay down in a coffin and never awaken, waiting to turn into dust instead. During this long sleep, his hair continues to grow, but when he awakens he is a rotting corpse. Kaname makes references to the loss of a love who sacrificed herself for a lost cause and the loss of his love is probably the cause of his despair.

Rido stole Juri and Haruka's first child, also named Kaname, inspired by the fact they shared a name, he sacrificed the baby to awaken the Kuran ancestor. Rido wanted to awaken the ancestor because he wanted to be the one to tame the beast and drink its blood, through this act, Rido became Kaname's master. However, upon his rising, Kaname instead attacks and drinks Rido's blood instead. During the interim, Kaname was mysteriously reverted into the body of a child and Kaname was raised by Juri and Haruka, though they never told Kaname earlier, Haruka was aware he wasn't really their son. Kaname loses his memories, only slowly awakening over time. He declares that he has regained his former self by the time that he destroys the council, perceiving that the essences of vampires have not changed since his time of going to sleep, stating enigmatically they are continue to build the same invisible cage. Prior to going to sleep he had mysterious decided a course of action, which he put off and went to sleep instead. He states that he will now continue that course and that the council is his first step.

source: http://vampireknight.wikia.com/wiki/Kaname_Kuran