Charlie was conceived largely by accident, due to Amenadiel not knowing it was possible for an angel to impregnate a human woman. Linda suffered from a fainting spell a month after she and Amenadiel broke up, with Maze forcing her to go see a doctor. Learning that she was pregnant, Linda had the complete support of Amenadiel and Maze despite their lack of knowledge about babies or angel babies, for that matter.
Shortly after Charlie's birth, he was kidnapped by demons who were hoping to make him the new King of Hell. However, he was rescued and returned to his parents.
- Nephilim/Angel-Human Hybrid Physiology: Charlie is a divine angel-human hybrid, the first of his kind. Being half-angel, Charlie can be taken to and from Earth without dying. In "Orgy Pants to Work", Remiel said that she had to take him to Heaven "for all eternity." This indicates that, as a half-angel, Charlie is immortal. As a half-angel, Charlie is also able to rule Hell.