- "I regret nothing. That's why I'm still alive."
- ―Duncan Fillworthe[src]
Duncan Fillworthe was a former Watcher, and, alongside Rupert Giles and Roger Wyndam-Pryce, one of the last surviving members of the Watchers Council. After the destruction of the Council and the activation of all Potential Slayers in the world, Fillworthe established himself in the town of Hanselstadt, where a powerful demon was feeding on its children, though the demon's presence kept vampires away. After there were no more children, Fillworthe announced that the town would serve as a sanctuary for Slayers not wanting to fight. Fillworthe actually had the Slayers fed to the demon, so it would feed on the Slayer's fears and regrets and keep vampires from overrunning the town.