Light is really smart and can outmaneuver almost anyone in conversation. He considers the detective L to be his only rival in terms of his intelligence. He is cold and calculating but knows how to act pleasant in order to achieve his goals. He has the deathnote , he is accompanied by Ryuk, a shinigami (god of death) who is only visible to one who possesses the deathnote. His father is the chief of police Yagami souichiro. Light believes in his own justice and is very egoistic, he is ambitious.