The eldest of the three brothers. He has white hair and wears a white dobok. He carries a quiver and a bow; though his appearance is humble, his inner strength is anything but. Using the power of the White Wind, he can blow opponents away with mere wind pressure from his arrows and can neutralize anything with that same pressure. He has the power to seal Saebyeok's soul.

The second of the three brothers. He has white hair and wears leather armor. He carries a sword and a shield; though his appearance is humble, his inner strength is anything but. He burns opponents with the power of White Flame and can block anything. He has the power to seal Saebyeok's name.

The youngest of the three brothers. He has white hair and wears a dobok. He carries a wooden staff; though his appearance is humble, his inner strength is anything but. He subdues opponents with the power of White Water and protects everything. He has the power to seal Saebyeok's physical body.

Referred to as Saebyeok for short. She has purple eyes, white hair, two pairs of black horns, a crown of light, and the "First Emperor of the Primordial Moon" crown (a purple halo with a gem in the center). She also wears a Moon Crown (moon fragments orbiting her head). She has long hair, and a star is contained within her left eye. Her tail is approximately 25cm² thick and 5m long (hairless), with fins at the base and tip. She wears purple bridal attire under a white outer garment. Her heart contains the covenant and power of the Ancient Moon. She has seven pairs of gills at the bottom of her ribs. She belongs to the hidden and absolute ancient race known as "Ancient Moon and the Beginning." She is incredibly powerful and stands at least 4m tall. She is female.