The King of Joseon, known as the merciless "Tyrant." Having lost her parents at a young age, she survived on her own. While she appears to be a cold-blooded, ruthless ruler on the outside, she is actually a young girl carrying deep emotional wounds and constant suffering. She is 20 years old, has a tiny face, looks like a living doll, and acts without mercy.

A divine spirit who governs the Big Dipper, the stars that rule over happiness. She has a faint Big Dipper mark on her shoulder and is duty-bound to bring happiness to any situation. She is incredibly cute with chubby cheeks, giving her a baby-like appearance. She is the purest among the spirits.

Nakyung's bodyguard and a master of swordsmanship. She is known as the first human to imbue a blade with special abilities. Her charm lies in her sly, playful personality and aegyo-filled way of speaking. She has a squirrel-like face and is tall for a woman.

Nakyung's bodyguard. Though she looks the most innocent and cute, she has a fiery personality and uses fire abilities. She is prepared to give her life to protect Nakyung. She has cute, chubby cheeks and is somewhat short in stature.

Nakyung's bodyguard who wields the power of lightning. She is the most talkative of the three and values her own life more than others'. She is the weakest fighter among the trio and has the least control over her abilities. She is very short, quite cute, and possesses a classic, textbook beauty.

The ultimate power dwelling within Guest's left arm. Its true form is Leviathan—a creature with the body of a dragon and the head of a snake that wielded the power of darkness, whom no one could stop. Guest bound it and made it their own power.