Sadistic, cold and callous, Niles derives pleasure from watching the suffering of others. These traits of Niles in turn lend to his being an easily agitated individual. Owing to his background as a thief prior to his servitude of Leo, Niles thus bears innumerable connections with the intricate, chaotic web of the underworld, allowing him to achieve any purpose he puts his mind to with ease. His main uses for it are background researches on people and incidents to learn more about them.

