Save KariudoCrimson, and in the meantime here a couple of unrelated antagonists.
Name: Zeishon Sha
Age: Unknown
Gender: Male
Race: Lemurian
Abilities: Lemurian Alchemy, draining life, possession, precognition, several unknown abilities
Song: Coming soon
Personality: Difficult to tell as of now
History: In ancient times the before the Lemurian civilization achieved it's superiority, in an age where there were numerous other up and coming civilizations were constantly assualting one another to become the superior civilization there was a a scientist among them who was in no small way responsible for the Lemurians success. Through creations such as Zuban, the Lemurian Egg which created an endless army of Mirage Beasts, the Lemurian Sun, and massive list of other creations which allowed the civilization to flourish. Unfortuneately though as time went on and peace was maintained his usefulness declined as well. Put simply without enemies, without the fear of destruction he was slowly sinking intro obscurity. The thought of losing his fame and influence in Lemurian society led him to create a new weapon, a precious known as Dark Devourer, a black crystal sphere which would infuse those around it with a corrupting darkness that would turn them into monstrous warped charicature of what they once were. He continued creating these abominations in order to create fear and anxiety within Lemurian society, in order to keep them buying more weapons from him. In time it was discovered that he was the one responsible for them which led to his eventual Exile from Lemuria.
In his exile he discovered ways to prolong his life indefinitely, allowing him to remain alive even to this day. This however did not stop the deterioration of his sanity brought on by his solitude, nor did it safegaurd him from the continued exposure to his horrific creation, and in the end he became an inhuman being, incapable of human speech. To this day he continues wander the earth, using his creation on whoever he comes across. Due to his inability to communicate in any human language, modern or ancient, his motives are currently unknown.