The manga series Death Note features an extensive cast of fictional characters designed by Takeshi Obata with their storylines created by Tsugumi Ohba. The story follows the character named Light Yagami, who chances upon a supernatural notebook which grants him the ability to cause the death of anyone he writes in it. Light uses the notebook he finds in order to cleanse the world of humans he has deemed unfit for society. A team of professional investigators set out to find out the mysterious killer and arrest him, and thus many other characters are introduced until Light is eventually caught. In the fictional stories featured in the Death Note universe, Tsugumi Ohba, the story writer, created characters that lived in a world featuring a notebook in which names written on it would lead to the ones named to die, typically the cause of death being a heart attack when otherwise not specified. Ohba chose names for his characters in a way that, as he described, "seemed real but could not exist in the real world", due to the fact that most of the characters were criminals or victims. Light Yagami, the main character, is depicted as the deadliest of them. Some character details differ between the manga and its anime, live-action film and drama adaptations. Main characters Light Yagami is the main protagonist of the series. After discovering the Death Note and knowing its true powers of killing people after writing a person's name and face in the mind, he decides to use it to rid the world of criminals to make the world a better place. As the series progresses, he develops a God complex as he attempts to become the ruler of the new world he creates. His killings are eventually labelled by people of Japan as the work of "Kira." But after a few days of killing criminals/hostages, "L", the best detective in the world yet an absurd guy, gets the job to find "Kira" and punish him for the murders he is committing. L , known solely as L, is the world's greatest detective and one of the main antagonists of the series. He takes on the task of tracking down and arresting Kira. His most noticeable characteristic is the fact that he rarely wears shoes. His disheveled appearance and lack of social etiquette causes people to doubt his position as L. He lives in solitude,