A professional con-man, Aiber is hired by L for his skills. He was proven helpful in playing the role of Eraldo Coil in the Yotsuba Arc, and in coaching Misa for her interview with the Yotsuba group. He died from liver cancer on 7 April, 2005. Aiber is also known by his initial "A", just like "L" and other people who have great influence in the organization that hunts down Kira.