For Dalida, whose home had always been the oceans depths, the dry land seemed barren and desolate. Even after a sea god gave her the power to live above water, she continued to cherish the ocean in her heart. However, she had also been given a secret mission by the sea god. Soon it would be time for the world to be swallowed by the sea. Dalida headed for the surface in order to continue with the necessary preparations. - The Tome of Mystaria, Chapter 1
Added on 23 May, 2014 as Boss Repelling Reward during Tome of Mystaria Raid Event.
Boss in 4th Chapter in Tome of Mystaria Raid Event.