Skogsfru

Skogsfru (スクーグズヌフラ) is a minor character in Toaru Majutsu no Index, and is a member of the Russian Orthodox Church secret branch Annihilatus.

Etymology
Her name comes from a Russian fairy. The fairy was a type that lived in the woods and would fall in love with humans, but their sex was so violent that the human partner would often be killed.

Appearance
She wears a binding outfit around her body that tightly encases her, but the outfit is made of lace and leather to maximize her sex appeal rather than being an effective means of binding someone.

Personality
Vasilisa referred to her as a perverted woman and her own comments support this as she would rather play with Sasha than an old hag like Vasilisa.

British Royal Family Arc
In her first appearance she is sent by Nikolai Tolstoy to acquire Sasha Kreutzev who had been thrown out of the room before she arrived. She ends up facing Vasilisa who uses a spell that blows up the room.

World War III Arc
Skogsfru is later shown to be alive when Vasilisa was contacted by Matthai Reese when he finally regained consciousness, where she comments that she is dealing with a group of rebellious subordinates which included Skogsfru.

Abilities
According to Vasilisa, she is an expert in all kinds of sexual magic, which fits both her name and her choice of clothing.