In Manichaean cosmology, the world of darkness, which invaded the world of light in a lustful desire to mingle with the light, is ruled by five evil Archons (demon, dragon, eagle, fish and lion), who together make up the Prince of Darkness.[1] The Father of Greatness parries the assault by evoking a number of entities, who sacrifice themselves and are absorbed by the Prince of Darkness; however, tricked by the Father of Greatness, their existence now depends on the light they absorbed.[1] To prevent the light particles from returning into their divine origin, they counter by giving birth to two demonic beings: Sakla and Nebroel. As the strict anti-thesis of the pure light, the Prince of Darkness cannot create ex nihilo, but only by copulation.[1]