Ren Fuuga, true name Len Kamine, is a police officer for the secret police. Orphaned after his home burnt down by the Karakuri and killed his parents, he met his first friend Rin at the orphanage. Taken in not long after by chief officer Kaito, he was trained from a young age to be an officer. He is stern, and from birth has had a desire to destroy, but specifically to destroy those who he believes sin, as they are "worthless pieces of scum".