The Sea Witch

The Sea Witch is a hybrid of an alien and a sea anemone and an undersea witch. She is the main antagonist of the episode, The Jewels of the Seven Seas.

She is tired of being stuck to rock due to being an anemone. So she sent her henchman, Octavius the Octopus to steal the merpeople's jewels to transform her into any sea animal she wants so she can rule the Seven Seas.

The Sea Witch is mostly green.