A typical hot-blooded fool, but he also shows a cool, relentless, and serious side at times, possessing great pride. He seems to have a short fuse and a bit of a temper. However, he is a hard worker who strives to become stronger, and as the protagonist, he is very affectionate and always cares for his comrades. He is very proactive as a friend to Samjang. His most frequently used Hanja Magic is Fist Gwon (拳). He wants to fight people who look stronger than him. He is quick to forgive. Furthermore, he has a strong sense of justice and is immune to most evil energies. While he is generally of a good nature, he is ultimately someone who acts for himself or for those precious to him.

A great beauty. Originally, she had a lively, brave, sensible, and clever personality. However, after sacrificing herself for Son Ogong and being struck by a curse of demonization, her mind and body have weakened significantly, leading her to show a more fragile side. She strongly dislikes deceiving others with Hanja Magic. Surprisingly, she has a pure side as well. She likes Son Ogong.

Son Ogong's friend. Because he has a crush on Samjang, his eyes turn into hearts whenever he sees her. He tries his best at everything, but the results are always comical. However, his kind heart for his friends and his steadfast actions are sometimes touching. Though he is a coward, he has shown a cool side by overcoming his fear to protect the people he loves.

The one and only princess of Paradise. She holds a high position of power, ranking 5th in the Heavenly Kingdom. She is the daughter of the Jade Emperor. Contrary to her status as a princess of the Heavenly Kingdom, she has a significant hot-tempered side. She is close with Samjang. With her prickly and blunt way of speaking and a bellicose personality that doesn't hesitate to enter battle, she deviates significantly from the typical princess character.