Many of the new characters, story and new region of Parusa are inspired by Filipino culture & mythology. Examples given by the developers include Merga's armor being based off ancient Filipino armor, the characters of Aaa, Captain Kalaw and Askal being based off Philippine animals such as the tarsier, Rufous hornbill and askals respectively, and the ancient super-weapon Bakunawa being based off the mythological sea serpent of the same name.