Case Study: Alias

L is his main name and alias in the Death Note series. "L" is also renowned as the no. 1 detective in the world.

Ryuuzaki is his alias in Japan (among the Japanese police). According to the Los Angeles BB Murder Cases, the origin of this alias comes from Beyond Birthday, who called himself Rue Ryuzaki.

Ryuuga Hideki is the name of a celebrity L used to enroll in the university to get near Light. The adoption of this nickname is actually a brillant tactic by L to forestall Kira.

Eraldo Coil and Deneuve, the second and third top detectives in the world, are also L after he laid claims to the names following a won battle over the real detectives.