Aiber, whose real name is , is a professional con man in the employ of L. He plays the role of , one of L's detective aliases, during the investigation of the Yotsuba Group. Aiber uses his initial "A", just like L, when communicating through computers. Aiber speaks many languages and uses many false identities. "Supposedly" he has a talent for using his "good looks" to convince women to pass information to him. Aiber enjoys "life on the edge" and his "biggest thrill" comes from conning people. Since he is a professional criminal, he is known solely in the underworld.