Sasha Kreuzhev

Sasha is a russian battle nun of Annihilatus who first 'appeared' as Misha Kruezhev in volume 4 and, whose form was assumed by the archangel Gabriel, the primary antagonist for the Angel Fall Arc in Toaru Majutsu no Index.

She carries around a bunch of unique weapons from hammers to saws and can manipulate water. Her appearance was used by the archangel Gabriel when the spell, Angel Fall was activated under the name Misha Kruezhev.

In Volume 12 it was noted that due to Angel Fall there is a massive amount of 'Telesma', the equivalent of mana for angels, left as residue in her as an after effect of Gabriel's 'possession', rivaling that of the Holy Mother. Though the real reason isn't known to her or anyone else of the Russian Orthodox Church, it resulted in her being put under observation for the time being.

In the same volume and Volume SS 1, it was mentioned her clothes were skimpy under the cloak because of the hobby of her female superior, Vassilisa, who forced it upon her in the excuse it's a binding spell to bind herself as a last resort if a demon possessed her from their work in Annihilatus of banishing supernatural spirits that shouldn't exist. In reality, Vassilisa only forced it upon Sasha as part of her hobby, and once tried to force a cosplay of 'Magical Girl Kanamin', one of Academy City's anime for kids, onto Sasha as well.