Lagoona Blue is the daughter of the sea monster. She has a pet piranha named Neptuna, and is a transfer student from "Down Under" (the sea), hence her Australian accent. Lagoona is as laid-back as she is friendly, and is friends with almost everyone at Monster High. She has a relationship with Gillington Webber. Like her friends, she joins Sora's team to save her world from the Heartless. She goes on missions that are underwater or whatever SHE chooses.