The Bookmen are group of minor antagonists in Princess Tutu.
They are a mysterious cult who, in fear of Drosselmeyer's powers, executed him by chopping off his hands. Unbeknownst to them, Drosselmeyer found a way to write stories from beyond the grave, allowing him complete control over their village, Gold Crown Town, despite even reality itself.
For many years, the Bookmen waited and stood ready to strike should a power like Drosselmeyer's ever appear again. When it did, it appeared from Drosselmeyer's own bloodline: a boy named Fakir.