L goes by plenty of aliases—Hideki Ryuga, Ryuzaki, Eraldo Coil, and Deneuve among them—and has built a reputation as the world's second and third greatest detective under the latter two names alone. He's famously secretive, communicating almost exclusively through his assistant Watari and never revealing his face to the public; instead, he represents himself with a simple capital L in Cloister Black font. When he joins forces with the Kira investigation task force, he asks them to call him Ryuzaki to keep his identity under wraps. The team never does learn his real name.
Birthday: October 31, 1979 (1982 in anime)
Zodiac sign: Scorpio
Height: 179 cm (5'10")
Weight: 50 kg (110 lbs.)
Likes: sweets
Dislikes: Wearing socks
Despite looking like he just rolled out of bed, L's got a frighteningly sharp mind. He's obsessively analytical, constantly questioning everything, and picks up on details most people miss. His quirks are pretty distinctive—he prefers crouching to sitting, lives on sweets and fruit, and handles objects with surprising delicacy. He spent five years in England as a kid and was actually the England Junior Cup tennis champion during that time.
L's explanation for staying so underweight while eating nothing but desserts? His brain burns through calories faster than anything else in his body. He's also insisted that if he sat like a normal person, his reasoning ability would drop by 40 percent—hence the constant crouching.
Content compiled by AnimeList.moe from publicly available sources.