Water Harpies are a race of green humanoid women with fish-like traits that live in the sea and occasionally kidnap others. Water harpies have a queen who adores playful pets and has her subjects seek out any potential new pets to amuse her. In the episode "All Work and No Smurf", two water harpies kidnapped the Smurflings and brought them to their queen. However, the queen was displeased with their lack of playfulness. The Smurflings were later saved by the Smurfs.