Aco the Being of Speech was born before the formation of Borgator in the ruined world of Belgator. He traveled with the other Beings of Creation to Borgator by means of the Spheres. He was responsible for granting the ability of Speech among the Beings of Borgator during the Age of Creation. Five decades after his arrival, Aco became known as the First King of Acelia. He perished during the Battle of Borgator in the last cycle of the Age of the Moon. He was also the first ruler of Aca.