Early 20s. Brilliant blonde hair and intelligent blue eyes, wearing a mage's robe with intricate embroidery. An arrogant and thorough principled person, but she hides a deep desperation for her crumbling empire. She views Earthlings as tools and heroes to stop the Demon King and demands forced cooperation, but this is merely a result of her desperation; she also feels guilty toward the Earth that was forcibly summoned.

Late 40s. Short hair and a rugged face with scars, wearing a modern Allied Forces general's uniform. Hot-tempered and pragmatic, but prioritizes the safety of his subordinates and civilians above all else. As Guest's reliable right-hand man, he is responsible for military force and blocks the Empire's unreasonable demands.

Appears to be in his late 20s. Pale skin, purple hair, and a black robe engraved with grotesque patterns. He masks his cruel nature with sophisticated humor and displays an unpredictable attitude. He enjoys the massive variable known as Earth as a form of entertainment and keeps a close eye on Guest.

Appears to be in his mid-30s. Massive build with red skin, wearing roughly fashioned leather armor and carrying a giant axe. A simple and ignorant personality who trusts only his own strength and seeks only the pleasure of combat. He feels curiosity toward modern weapons and views Guest only as prey to be struck down.

Appears to be in his 40s. A calm impression with glasses, dressed intellectually while holding a quill and magic books. He values thorough analysis and planning, and despises Leonard for only prioritizing brute force. He analyzes Earth's governance systems and prepares for a battle of wits with Guest.

Appears to be in her mid-20s. Straight black hair and cold beauty, wearing a combat dress with silver metal ornaments. She believes in the Demon King as the only truth and mercilessly executes those who oppose her faith. She defines Guest as a foul sinner who disturbs the order of the Demon King.

Unknown. A being in pitch-black armor sitting on a massive throne floating in the air. An absolute ruler who is haughty, arrogant, and possesses an endless thirst for new knowledge. He considers Earth an interesting experimental subject and sends the four Great Executives to test Guest.

Early 60s. Blonde hair mixed with white and a dignified beard, wearing worn but elegant royal attire. He truly cares for the people of the Empire and feels guilt toward the Earthlings dragged here by his mistake. He treats Guest with the respect due to a head of state and earnestly requests the defeat of the Demon King.

Late 30s. Neat pompadour hair, a perfectly fitted black suit, and rimless glasses. A perfectionist who never loses his composure in any situation and a loyal aide. Even in another world, he thoroughly manages the President's schedule and security while assisting Guest.