The Datenshi (堕天使, Fallen Angel), alternatively referred to as Meitenshi (迷天使, Stray Angels), were former Tenshi who willingly abandoned the goodwill of The One in order to fulfill their own selfish desires through sinful or evil means. Ultimately, the Datenshi betrayed Tougenkyou by letting their hubris and wickedness fester until it gradually corrupted them to a supposed point of no return. The term "Datenshi" also extended to those Tenshi who willingly pledged their allegiance to Lucifer's father, The Outsider.