Who is L on my task

L Lawliet (エル・ローライト, Eru Rōraito), commonly referred to by his alias "L" (エル, Eru), is a fictional character in the manga, anime and film series Death Note. L is considered the world's greatest detective, whose identity remains unknown before the story takes place because he has never revealed himself to the public.

L is young adult character, underweight and has a poor style and some bad habits. He had born in 31 October 1979. He has black shacked hair and black line under his eyes. His height is estimated 179 cm and weight 50 kg. He also claimed himself as three greatest detectives in the world, they are L, Erald Coil and Deneuve. In the Kira case, he also use the name Ryuuzaki and Hideki Ryuuga.

He is super genius young detective who has a strong sense of justice. He likes any sweet snack and drinks. He said that sugar is more needed by brain than other organs. He has a unique sit position. That’s he put both of his leg on the chair. We may think that it’s very impolite, but L claimed that his analysis ability will drop to 40% whether he sit like ordinary people. In his work, he is always being helped by Watari (called W), a rich old-man that has an orphan school in England. He is the investigation leader of Kira case. Lawliet in TV Serial, died in 5 November 2004 by heart attack after Remu (a shinigami-grim reaper-that possessed Misa Amane's Death Note) wrote his name in her Death Note. His job was continued by his successor, Near (N).