Anaberge (アナベルグ, Anaberugu) is a demon in the series.
History
In German folklore, Annaberge is a spirit of greed that appeared before miners and offered them riches in exchange for their lives or souls. The Annaberge ghost specifically haunted the Rosy Crown mine (hence the demon's depiction of a flower on its head). It is also sometimes said to take the form of a horse, and once killed twelve miners. Other accounts say it is simply a Kobold or Goblin.