Fatla, a Leviathan of colossal scale, is a majestic sky whale who shifts into human form. Alongside her sister Vania, she ferries travelers across the skies under the Demon King’s banner, bearing a luxurious hotel resort on her back. In her human guise, she attends to guests’ needs and oversees the resort’s operations.

Leviathans’ immense size and natural traits grant them extraordinary strength. Fatla and Vania showcased their formidable abilities by guiding a pivotal figure through the perilous Tree of Life to cure a magical affliction. Their duties extend to orchestrating seamless travel between destinations and providing strategic insights during voyages, ensuring both efficiency and safety for those under their care.