L is the deuratogonist of the first half of Death Note, as well as Light's primary adversary. He is unbelievably intelligent and his detective skills are incredible
Role in Parallels
In Parallels, L finds the Death Note rather than Light. Unlike Yagami, he is initially very hesitant to use it, although he does not doubt its credulity. However, he eventually uses it as a test, and is forced to use it further afterwards in order to assist him in the investigation of the murder of the man he killed. Due to the Death Note, his character is eventually changed drastically.