Soul Calibur is the spirit sword created to combat Soul Edge and is known as the protagonist in the Soul series. Algol, the king that once wielded Soul Edge and lost his son because of the demonic sword, vowed to create a holy sword from the purified shards of Soul Edge that would oppose the evil sword, being its equal in strength and opposite in intent. Algol enlisted the help of the greatest sage in the land, who used purified fragments of the cursed sword to forge a new spirit sword, to be known as "Soul Calibur".
