The leader of the Six Ancestors, and a great monster who holds a deep trust in the Dark God. She bears the characteristics of lamias, harpies, and dragons, and possesses tremendous physical and magical capabilities. Although she has no defining strength among the Six Ancestors, she has an affinity for a balance of outstanding abilities. Saja has the greatest overall fighting ability amongst the Six Ancestors, and is known for being the strongest among them. Her power is said to rival Heaven's most powerful angels, Micaela and Lucifina.
In the parallel world known as "Makai" ruled by the Dark God, Saja does not rule over a city. She is the confidant and guardian of the Dark God, and rarely leaves her side. The Dark God does not move from her castle on the Monster Continent, so Saja leads the Dark God's armies as her adjutant. Saja has a strict and level-headed personality, but she appears to dislike excessive cruelty. She is deeply loyal to the Dark God, and it is rumored that she could become her successor.
Saja dislikes atrocity, but as she is a monster, she finds no greater pleasure than in playing with men. She rapes defeated men and feeds upon them for her own enjoyment. As a yoma, it isn't unethical for her to squeeze challengers to death. That is to say, she is only exercising her natural right as the victor.