Demon

 (魔神, Majin) is a character in Ousama Ranking and its anime adaption. He is a supernatural evil entity who is said to appear when great heroes die. He is the source of many major characters' abilities and afflictions, including Bosse, Miranjo, and Bojji.

Appearance
The Demon is an entity with a generally humanoid appearance, but inhuman proportions. It is even larger than King Bosse, with exceptionally-long limbs and a muscular, though slim, body. It has flaming red skin, black eyes with yellow irises, pointed ears, pointed horns, a shaggy black beard, and a purple mouth held in a permanent heart-shaped rictus with tusks protruding downward.

Personality
The Demon is a largely enigmatic presence, but tends to behave like a traditional devil, tempting mortals with whatever they desire in exchange for heavy costs they typically do not fully understand.

It speaks an unknown language that must be interpreted for others. The only known person who can speak this language is Miranjo.

Plot
It is believed that a devil would appear whenever a hero dies unexpectedly, though it is unknown if this demon is of a species or an individual. It has been suggested that multiple characters have struck bargains with the Demon in the past, chiefly Miranjo. Additionally, other characters are aware of the Demon's existence, and regard it as their enemy, namely King Desha.

In the younger days of Bosse, on the advice of his ally Miranjo, he requested to become the world's strongest man. The demon replied, through Miranjo's translation, that he can materialize wishes, but cannot grant powers that don't already exist unless he takes away the power of those related by blood to him, even if it was through a child that would one day be born, and sacrificed some of his lifespan. Bosse agreed to the conditions and requested the demon grant him his wish

Years later, immediately after Bosse's death, the demon appeared on his chest from a plume of smoke exhaled by Bosse. He stared at the group, pointed at Bojji, himself, threw his head back in laughter before disappearing.

Supernatural Bargains
The Demon offers all who seek it a bargain, usually phrased in plain but deceptive terms. It is able to wield enormous magic in this way, including transferring one person's strength to another. The extent of this ability is unknown.

Quotes

 * "Even though I can materialize wishes, I can't grand you powers that don't already exist. However, I could grant you your wish by taking away the power of those related to you by blood..." - Miranjo translating the Demon's words to Bosse, Chapter 9
 * "It would also work if you had a child one day... But, more importantly, you will also have to sacrifice some of your lifespan in return." - Miranjo translating the Demon's words to Bosse, Chapter 9

Trivia

 * The Demon appears to those who have used its power as they are dying. It appeared after Bosse's death, and is suggested to have appeared during the death of Miranjo's original body.