Demon King

Overview
The Final Boss of all Yo-Ma Great War games except Yo-Ma Great War Zero. His goal is to corrupt the world with the Devil's will.

Appearance
He was a good-looking man with gentle eyes. Endless miasma dispersed from his body, and immense dignity could be felt from him. Overwhelming pressure that would make people in front of him kneel right away.

He has a Devil Rune tattoo covering his body.

History
In the current era, the Demon King is seen as the symbol of absolute evil, but in the era of Yo-Ma Great War Zero, the Demon King was just a strong demon. In other words, it belonged to the classification of enemies who were a little lacking in force but had strategic tactics and unconventional capabilities. However, in the background of the Yo-Ma Great War Zero, countless fearsome enemies ran wild. The Demon King was no match for the Great Ancient Mage, who also faced the Devil himself.

The Demon King didn’t die properly in the human world, lived forever in the Demon Realm, and tried to fight the human world through his subordinates. But as he was the Final Boss, being summoned to the human world and fighting with the main character was common in all the series.

The moment he realized Zero existed in the current world... the very moment when he noticed that the curse which the Devil himself planted into the world long ago got activated, the Demon King ordered his subordinates to urgently lockdown Merdin. Why would he do that? He didn’t want to get summoned to a world where Zero existed. And he blocked the dungeon to make his resurrection impossible and prepared several measures in case the barrier broke.

With a total of three barriers on the dungeon, Merdin, and the Eternal Glacier, he tried to stop Zero. However, he instinctively knew that all of his tricks would fail. Zero couldn’t be stopped with these petty measures. It would just make him hesitate a bit. But he still had to do it. Yes, they were just last-ditch efforts.

While denying the fact that Zero, whose entire body was cursed by the Devil, could never be resurrected. While enraged over why such a disastrous annoyance would come back and block his path once again. And trying to negotiate with other beings in the Demon Realm since there were many others who could fight against Zero on his behalf... then kneeling down in despair and sorrow with the fact that Zero will summon and kill him, no matter what.

Finally, he decided to accept his fate. That’s right; the Demon King accepted his imminent death. He swore to be the cornerstone for the Devil. With the faith that one day, the Demons would reign over the human realm.

When Zero finally came to kill him, he sacrificed his life, as well as the lives of all the Demons in his army, to activate his Exile Magic with the intent to eradicate Zero from existence.

Abilities
 Demon Domination 

After being resurrected, the Demon King would temporarily have the ‘ability to rule over all Demons’.

 Mana Radar 

A radar that searches through a large area for information while creating its own territory.

 Black Mana Barrier 

 Devil Rune 

Given to him by the Devil. Enhances his other abilities.

 Exile Magic 

An ancient magic technique that coerces the world’s will, targets Zero as its enemy, and completely eradicates him from the world. It has prerequisites, such as needing a large Magic Field, needing the sacrifice of thousands of Demon as well as the Demon King himself, and needing Zero to be afflicted with the Curse of the World by the Devil.

Trivia

 * During Yo-Ma Great War Zero, the Demon King was part of the Ten Demons. The Four Heavenly Kings were the best Demon warriors in Yo-Ma Great War Zero, but excluding them, the strongest Demons were called the Ten Demons, of which the Demon King was one.