Sally Blackteeth
From Tardis Wiki, the free Doctor Who reference
Sally Blackteeth is one of the more famous aliases of the only Water Hags to survive the dissapearance of Strepto. Among her other aliases were Saskia Harden and possibly Jenny Greenteeth, though this had not been confirmed. Her real name is almost incomprehensible to humans. Greendown Moss was one of her homes.
Sally's true age is unknown but her birth predates the middle ages from by unspecified amount of time and died sometime in the late 2000s when she attempted to travel through Cardiff's space-time rift and was shot on sight by all five members of Torchwood 3. (TWN: Something in the Water)