8 Facts About L That Are Rarely Known: The Mysterious and Complex Side of the Genius Detective 'Death Note'

Watari, also known as Quillsh Wammy, is not only L's assistant and loyal servant, but also the founder of Wammy's House, an orphanage specifically for genius children. L was one of the first wards at Wammy's House, and the relationship between L and Watari is more akin to a father-son relationship than just a professional one.

L has a strong social phobia and struggles to trust others. This is one of the reasons he almost always works alone and only trusts Watari. 

Although rarely expressed directly, L is actually preparing his successor from Wammy's House. Near and Mello are two genius children from the orphanage who were chosen as potential replacements for L.

L is known to have a very irregular sleep pattern. He often stays awake all night and sleeps during the day when absolutely necessary.

L has an extensive network that includes international law enforcement agents, including the FBI. Although most of them do not know L's true identity, they have complete faith in his abilities. In the story, L uses FBI agents to spy on Kira in Japan, demonstrating the extent of his influence and power.

L began solving major cases when he was still very young. According to some sources, he solved his first international case at around eight or nine years old, an achievement that is nearly impossible for a child of his age.

L actually shows empathy and concern, even though he rarely expresses his feelings. For example, he warns Naomi Misora (Ray Penber's fiancée) to be careful after her fiancé's death, even though he knows this may not change her fate.

L often questions the morality of Kira's actions, but he also does not fully believe that human laws are always right.