Anna Sprengel

Anna Sprengel (アンナ＝シュプレンゲル) is a magician of the Rosicrucian Order, the master of its No. 1 temple in Germany, who was said to have played a role in the foundation of the Golden Dawn and supposedly acted as a point of contact for the Secret Chiefs, though her existence has been considered a dubious one.

Appearance
Anna Sprengel has the physical appearance of a ten-year old girl, about 30-40% shorter than Madame Horos when she was possessing Anna's body and with a flat chest. She has purple eyes and long reddish-blonde hair which reaches her ankles, rolled into large ringlet curls and squished flat at the ends into several fried shrimp shapes,  with rose decorations throughout.

After being restored to her body, Anna wore the gaudy red dress which Madame Horos had been wearing while using her body (the fabric and design of which Anna did not like), which was now too big for her and had to be held to avoid it falling off. She was also barefooted, having discarded the shoes as they were now the wrong size for her.

Background
In the past, Anna supposedly helped in the foundation of the Golden Dawn. She is said to have had the role of Secret Chief, and functioned as a point of contact, much like Aleister Crowley would act as a point of contact for Aiwass, described by him as one of the theories concerning the Secret Chief. However, it isn't certain whether she actually existed or whether her existence was fabricated. A letter which William Wynn Westcott supposed received from her was actually forged by him in order to give prestige to the cabal he helped found. Wanting to claim that the cabal was the continuation of an ancient Rosicrucian line, he faked a letter sent to a German cabal (whom he claimed to have two temples) as well as a response from Anna Sprengel authorizing the creation of a British branch (hence the Isis-Urania Temple being called #3), an exchange known as the Sprengel Letters.

At some point during the time of the Golden Dawn, a fraud known as posed as Anna Sprengel, bringing a disaster to the cabal and earning the hatred of Samuel Liddell MacGregor Mathers.

World War III Arc
Anna is mentioned by Aleister Crowley when he appears to attack Fiamma of the Right in Russia, despite still being in the Windowless Building. Aleister describes her supposed role and dubious existence, saying that his current state is the one that Anna was said to have had.

Aleister Crowley Arc
Anna Sprengel is mentioned by the recreated Mina Mathers during the visions of Aleister's past shown to Kamijou Touma in the Windowless Building, specifically with regards to the letter forged by Westcott.

Coronzon Arc
Anna Sprengel was mentioned during Aleister Crowley's explanation concerning the Isis-Urania Temple during the events involving the reproduced Golden Dawn. The events concerning the Horos deception were also referenced.

During the events surrounding the Ceremony of Mo Athair, Madame Horos appeared before Takitsubo Rikou, still posing as Anna Sprengel. After the ceremony was thwarted, she approached the dying Aleister, but was ambushed by Aiwass who proceeded to restore the real Anna to her body.

Post-Coronzon Arc
After the events in the Irish Sea, Anna and Aiwass travelled to the Tower of London, concealing their presence from the populace, observing and discussing the events which were unfolding at Windsor Castle concerning Kamijou Touma and the manifestation of the One who Purifies God and Slays Demons.

Abilities
According to Aleister Crowley, Anna was said to have been the same higher existence that he became, existing in a different dimension, beyond just being expressible as 0 or 1, and being able to exist in multiple locations at the same time.

Together with Aiwass, Anna has made use of an invisibility spell based on the symbol of the black egg.