Firekeepers are the sworn caretakers of certain Bonfires found in Lordran. Their presence maintains the flame of a Bonfire, and should they be slain, the Bonfire they take care of will die. Whether by chance or design, all Fire Keepers are female (presumably even the Stone Dragon, because of the nest).
Fire Keepers seem to have some form of disability: Anastacia is mute and maimed; Quelaag's Sister is physically warped by the Bed of Chaos and sick from the pus she sucked from the residents of Blighttown; and the Darkmoon Knightess is said to be concealing hideous swarms of humanity under her brass armor.
There are four Firekeepers in the game:
- Anastacia of Astora (Firelink Shrine Firekeeper)
- The Fair Lady (Queelag's Domain Firekeeper)
- The Darkmoon Knightess (First Anor Londo Bonfire Firekeeper)
- Stone Dragon (Ash Lake Bonfire Firekeeper)
Although the Bonfire in front of the Stone Dragon is lit upon the player's arrival, it is safe to ignore the possibility that it may be a Firekeeper due to the fact that Ash Lake is a metaphorical place.