The Demon King Gokuaku (ゴクアーク Gokuāku?) is the ruler of the Great Demon World. He was sealed by Eldran for ages, but when the seal was broken, he immediately moved to conquer Earth and change it into his domain. This revival was cut short however when Eldran, sensing this, returned to re-seal Gokuaku and reverse the damage he did. While this succeeded, Gokuaku was able to send out one of his servants, Yaminorius III, through a small crack in his seal, to prepare the Earth for his takeover.