Arch Demon [上位魔将(アークデーモン), Āku-Dēmon] are the pinnacle of authoritarian figures of Demons. Unofficially confirmed and only existing in a few records, they are half-legendary monsters.

An Arch Demon is a resident in the spirit world as well as the physical world where humans reside, it is an existence above devils. It is a spirit being, unmoved by the forces of the world unless reincarnated. Essentially, they are on the same level as spirits.[1]

When summoned with magical energy, all they can do is obtain a temporary physical body and function for a short duration. However, there are also those who gain a physical body in the physical world. One of the oldest demon lords is an example of such. That Demon Lord is known of formerly being an Arch Demon.[2]


Their strength, "A"(or for some A+), is said to be equivalent to pre-demon lord class. And their powers remained as demon lords of legends. A single one can destroy untold numbers of towns.

In both name and reality, it is said to be the strongest of the demon lords. Against this kind of monster, even 100 Greater Demon will be defeated.

A Demon can inspire fear into its enemies hearts and thus control the soul. While there is a chance to resist a Greater Demon and inferior, an Arch Demon doesn't take “no” for an answer. As a result, one usually goes mad.[1]

Making a CONTRACT is a typical method for Demons to Grant the wish of The one who called them or individual person desire The price can be anything not necessarily with the summon offers

Known Individuals


  1. 1.0 1.1 WN - Chapter 71: I, The One Who Had Sprouted
  2. WN - After Chapter 185 in Intermission -Guy Crimson-'s Story