Dark Souls: Prepare To Die Edition - Chaos Witch Quelaag

Queelag is a daughter of the Witch of Izalith and, along with most of her family, failed to escape from the chaotic flame and was corrupted by it. Due to exposure to the flame, Quelaag and her sister mutated into spider-like creatures with their upper body being fused to the monsters' backs. She is the Fair Lady's older sister. When their mother, the Witch of Izalith along with their other two sisters became the Bed of Chaos, she fled with her sister. Although their sanity is intact, their lower bodies became bound with demon spiders. When her sister became weakened and blind, Quelaag remained in Blighttown to protect her from anyone or anything that would try to harm her.