About "L" Death Note

L, who also uses the aliases Hideki Ryuga (流河 旱樹, Ryūga Hideki), Ryuzaki (竜崎, Ryūzaki), Eraldo Coil (エラルド＝コイル, Erarudo Koiru), and Deneuve (ドヌーヴ, Donūvu), the latter two for which he has developed reputations as the second- and third-best detectives in the world, is quite secretive, and only communicates with the world through his assistant, Watari. He never shows his face to the world, instead representing himself with a capital L drawn in "Old English MT" or "Cloister Black" typeface. After meeting the Kira investigation team, he requests that the task force refer to him as Ryuzaki as an additional safety measure. The Kira investigation team never learns his true name.
L's disheveled and languid appearance masks his great powers of deduction and insight. He tends to second-guess everything he is presented with, and is extremely meticulous and analytical.

Left; L as a child in the anime. Right; L as a child in the manga.

Added by Mikami Teru

He has several quirks, such as preferring to crouch rather than sit, eating only sweet foods (like desserts and fruits), holding items very delicately (as if being overly cautious), arranging objects and information alike, very pedantically, and either distractedly or very intently stacking or in other ways playing with his staple food items. L is almost

L's preferred posture

Added by Kumori

always encountered performing actions that are considered inappropriate or rude in public. These actions/habits include biting fingernails in public, placing feet on furniture, slouching, chewing with an open mouth, talking with his mouth full, calling out personal observations that may offend others, etc. L stayed in England for five years, and during that time he was the tennis champion in the England Junior Cup. L is multilingual, being able to speak French, Italian, English, Japanese and presumably others, when he solves cases. In chapter 38 of the manga, L suggests that even though he eats only sweet foods, he remains underweight because the brain uses the most calories of any organ in the body. He also says that if he sits normally, his reasoning ability would drop 40%.
When asked about L's ethnicity, Ohba responded saying "I think of him as a quarter Japanese, a quarter English, a quarter Russian, a quarter French or Italian, like that". Ohba said that L is the most intelligent character in the entire Death Note series because "the plot requires it". He added that he personally views L as "slightly evil".