The Demon King feared by all. There is nothing he cannot erase. He views humans as mere trash.

One of the Four Heavenly Kings of the Demon King's Army. A demon girl of the fire element. Possesses a calm and collected personality; her responses to anyone other than the Demon King are curt. She enjoys burning down forests.

One of the Four Heavenly Kings of the Demon King's Army. A magical beast of the madness element. Has a violent temperament and goes on a rampage when angered. Loves meat above all else. Any kind of meat will do.

One of the Four Heavenly Kings of the Demon King's Army. An undead of the darkness element. Holds a high status, often called the Undead King, and commands all undead. Can communicate through words but does not understand the human heart. Specializes in magical attacks.

One of the Four Heavenly Kings of the Demon King's Army. A vampire man of the poison element. Tall and well-built. He always carries multiple venomous snakes; anyone who attacks him will be bitten. He is constantly seeking delicious blood.

The King of Goblins. Aligned with the Demon King's Army, he plots to throw the human world into chaos. He leaves basic combat to his right-hand man, Glee, and his left-hand man, Bourbon. He seems to be hiding a secret trump card.

A boy in the Demon King's Army who is always riding a Black Ogre. The Black Ogre cannot speak but possesses great strength and always protects the boy. The boy can only give simple instructions. His speech is awkward. The Ogre is a glutton.

A bat girl. She is forced to do nothing but chores at the Demon King's castle. She has a kind heart. She joined the Demon King's Army after being treated cruelly by humans. She is almost entirely incapable of combat.

The legendary Hero. Heading toward the Demon King's castle to defeat the Demon King's Army. He leads a party, and even the Demon King fears their power.

Shuen no Mikado. A monstrous entity and the calamity of this world. Said to be the source of all disasters occurring in this world. Aligned with neither the Demon King nor the Hero. Has no allies. Possesses power that shakes heaven and earth. A being that even the Demon King fears. It is said he will awaken given the right trigger.