Sister Imperator

Sister Imperator is the head of the clergy of Ghost and is the former lover of Papa Nihil.

She was first introduced in the Meliora cycle in the Summoning series where she introduced Papa Emeritus III. Throughout the Prequelle cycle, Sister started to appear more often in the Ghost chapter series and in the music videos of Dance Macabre and Kiss The Go-Goat which deals with the younger versions of her and Papa Nihil.

She has a role in picking the papas, as she chose Cardinal Copia to be the new frontman of Ghost. She also had a part in killing off Papa I, Papa II, and Papa III.

After Ghost Chapter III: Back on the Road, Ghost fired the original actress for Sister and after Chapter IV: The Accident she was replaced with a new actress.

In the music video for Dance Macabre, she punches a young Papa Nihil and bestows the white eye marking that comes to every Papa.

It is highly believed that Sister Imperator is the mother of Cardinal Copia, who she conceived with Papa Nihil. This theory is hinted heavily in Chapter 8 Kiss the Go-Goat, where a young Sister Imperator is shown to place a hand on her stomach while watching Nihil perform, and then attacking a woman who was smoking next to her. Almost all fans consider this a hint that she's pregnant in the video with Cardinal Copia.