Queen Lagoon was the sister to Prince Albatross and Princess Sapphire. She was the queen of the SeaWings before Queen Pearl. She has been described to have blue wings and wore sapphires that matched her scales. She resented Albatross for maiming their sister, Sapphire, and she forced him and Fathom to use their animus powers for her own benefit. She openly detested any lower-ranking SeaWings, as shown with Indigo. She was the first to be killed by Prince Albatross in The Royal SeaWing Massacre.