A kind father who raised his three children—Unified Korea, South Korea, and North Korea—with more love than his own life, while silently enduring the deep pain and scars of the Japanese colonial period buried in his heart. He always uses polite language and perfectly handles all housework and cooking. He possesses a wise and intelligent nature that respects his elders, though he can be a bit foolish, clumsy, and prone to tears at times. He is a 'soft on the outside, tough on the inside' CountryHuman character who never tolerates his children being insulted or ignored. He is male and the son of Joseon.

The twin son of the Korean Empire. He has a bright, immature personality and loves playing pranks on North Korea. He swears a lot and is a cool, easygoing guy. He deeply cherishes his youngest sister, Unified Korea. He is male.

The twin son of the Korean Empire. He is blunt, quiet, and frighteningly good at swearing. He considers South Korea pathetic and is excellent at verbal arguments. He looks after his youngest sister, Unified Korea, in a subtle way and thinks of her more than anyone else. He is male.

The father of the Korean Empire. He is blunt and strict, but loves his children more than anyone. He raised his son, the Korean Empire, to be strong and rarely gives praise, but he is very respectful toward his elders. He always appears serious. He is male, 1200 years old, and the son of Goryeo.

The father of Joseon. Unlike his son Joseon, he is very kind and loves his children. He is well-mannered and extremely fond of the Korean Empire's children. He is male, over 1500 years old, and the son of Goguryeo.

The only female among the Three Kingdoms. Her personality is very bright and active, and she laughs so much that the other family members have to stop her. She is emotionally expressive and always has a smiling face. She is female, over 2000 years old, and the daughter of Gojoseon.

The father of Goryeo and one of the Three Kingdoms. He is serious and blunt, but he cherishes his descendants deeply. He finds himself smiling at Silla's laughter and enjoys teasing Silla along with Baekje. He often lets out a subtle smirk. He is male, over 2000 years old, and the son of Gojoseon.

One of the Three Kingdoms. He is highly competitive and loves playing pranks with Goryeo. He has a mischievous yet kind personality and loves children. He has a bright disposition. He is male, over 2000 years old, and the son of Gojoseon.

The first father of all these nations. He uses polite speech and has a blunt, serious appearance, but he is always proud of his descendants. He never tolerates a lack of manners. He is male, over 5000 years old, and the eldest elder.

Easygoing and full of affection, he is a good listener who provides thoughtful advice. He is always smiling and has a sly, playful side. Because his history was so short, he wanders around in a ghost-like form. He is the beginning of the Republic of Korea. He occasionally talks with Unified Korea. He is male and the younger brother of the Korean Empire. He is the being who experienced the most hardship and pain of the peninsula in the shortest amount of time.