Formosii
The Immaculata Formosii was a legendary "War Goddess" of the posthuman era. During the early years of the War, she had a reputation for briefly allying with different powers before growing bored and moving on.
When Devonire was searching for the arm of Grandfather Paradox, the Immaculata Formosii claimed to be a former member of Faction Paradox who had stolen the arm while defecting to the enemy; however, when they met at Kaiwar, she instead sold him his own severed arm.
The Book of the War referenced an entry about the Immaculata Formosii as part of its explanation of the enemy; however, there was no such entry in the book, suggesting that it had been unwritten by enemy action. (PROSE: The Book of the War)