Kaname 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. He has shown that he cares deeply for Yuki ever since he saved her, and loves her in a romantic sense. Kaname also asked Yuki to become a vampire and live with him for all eternity by his side, but manages to stop himself from biting her. He is both jealous and angry with Zero for biting Yuki and endangering her life.
He also seems to know the pureblood who bit Zero, Shizuka, and kill her before drinking her blood to protect Yuki, in spite of it being a terrible taboo. Kaname was the ancestor of Kuran and was resurrected by Rido from the grave, thus making him unable to kill Rido. Plus he even let Zero drink his blood so Zero can live for much longer to protect Yuuki.