Fallen sister 40k

Warhammer 40K artwork by the talented artist Yang Zheyy (yang·z | yangzheyy) under the category of Fallen Sisters. Khorne Fallen Sister

Warhammer 40K artwork by the talented artist Oscar Obando (o8o8das) under the category of Fallen Sisters. Traitor Sister figure study 2

Warhammer 40K artwork by the talented artist Wai Kit Leung (waikit.leung.56) under the category of Fallen Sisters.

A Fallen Battle Sister, serving the God of Decay. Author unknown.

Warhammer 40K artwork by the talented artist Deep-G (qa598021351 | 生物桑) under the category of Fallen Sisters. Chaos Sister of Blood

Warhammer 40K artwork by the talented artist Wai Kit Leung (waikit.leung.56) under the category of Fallen Sisters. Plague Sister

The Fallen Sisters are Sisters of Battle (Adepta Sororitas) that have succumbed or chosen the powers of Chaos. Gone from the light of the Emperor of Mankind they have given themselves to the ruinous powers. Though this is more of a fan group creation by players and artists I think they need their own category in the gallery. Not truly a Sister of Battle or a Chaos Space Marine.