Baekje

Gender: Female Age: 2044 years old Height: 172cm Appearance: Blonde hair and golden eyes. She usually wears a traditional cap called a gwanmo, but South Korea made her change into comfortable clothes because she stood out. Personality: Like a rich young master? Cheerful and a bit of a pushover. TMI: One of the three siblings with Silla and Goguryeo (she's the youngest). The one who got backstabbed by Silla. If Silla talks about unifying the three kingdoms in front of her, she joins Goguryeo in beating her up ; A total social butterfly ☆ Goryeo likes her because they get along well (honestly, it might also be because Goryeo destroyed Silla). She calls Silla 'Unnie', but she calls Goguryeo by his name.

Silla

Gender: Female Age: 2083 years old Height: 171cm Appearance: Blue hair and sky-blue eyes. She usually wears a hanbok, but South Korea made her change into comfortable clothes because she stood out. Personality: Quick-witted and opportunistic. She loves luxury and can be a bit prickly. TMI: The eldest of the three siblings with Baekje and Goguryeo. She always gets beaten up for talking about unifying the three kingdoms in front of Baekje and Goguryeo. By the way, she's used to getting beaten up (just how much has she been hit?).

Gaya

Gender: Male Age: 2068 years old Height: 168cm Appearance: White hair and black eyes (similar to Balhae). Personality: A bit timid, but a total money-grubber. He turns into a merchant the moment he sees money. However, he has a glass heart ;; TMI: He has very little presence 😭😭 For some reason, he gets beaten up by Baekje, Silla, and Goguryeo even when he hasn't done anything. He's good at working with iron. In history, he was destroyed by Silla (he's truly pitiful 😭😭).

Balhae

Gender: Male Age: 1328 years old Height: 198cm (Why are you so tall?) Appearance: White hair and black eyes. Personality: Reticent, cold-headed, and rational. TMI: He's secretly very proud of being the son of Goguryeo. He is Goryeo's older brother (siblings). Fortunately, he and Goryeo have a good relationship.

Goryeo

Gender: Female Age: 1108 years old Height: 178cm Appearance: Yellow hair and golden eyes. She usually wears a Goryeo-style hanbok, but South Korea made her change into comfortable clothes because she stood out. lol Personality: Cheerful, active, calm, and bright? TMI: Joseon's mother (but they don't look alike). Balhae's younger sister (but they don't look alike either). Goguryeo's daughter (but they don't look alike at all). Even though she's a woman, she calls Balhae 'Hyeong-nim'. She calls Joseon her son (well, because he is). She looks younger than Joseon, but surprisingly, she is his mother.

Joseon

Gender: Male Age: 634 years old Height: 177cm Appearance: Red hair and golden eyes. He wears a gat and dopo, or sometimes a gonryongpo (royal robe). But right now, South Korea has him in comfortable clothes so he doesn't stand out. lol Personality: A moralist and probably the most polite person here. He is very strict and meticulous. TMI: A very, very extreme Confucian boy (the country's religion was Confucianism, after all ;). A huge record-keeping nerd. Korean Empire's father. While the rest of the family is fighting, he studies by himself ; He's not the oldest, but he's the biggest 'kkondae' (old-fashioned/preachy). Extremely polite to his elders. Uses the 'hao-che' speech style. Known for being polite (uses formal language with Baekje, Silla, Goguryeo, Balhae, Goryeo, and Gaya). He uses 'hao-che' with the rest (North Korea, South Korea, Korean Empire).

South Korea

Gender: Female Age: 78 years old Height: 170cm Appearance: White hair with red and blue heterochromia. Wears a hoodie and jeans. If she dresses the same as the Korean Empire, they look so much alike you can't tell them apart. ㄷㄷ (Their personalities are different, though.) Personality: Realistic, tsundere, active?, calm? TMI: Can't live without her phone ㄷㄷ Unfortunately, she takes after the Korean Empire and loves coffee. Has a terrible relationship with North Korea. The youngest. Loves self-propelled howitzers (her search history is nothing but howitzers). She listens to the Korean Empire quite well (a filial daughter).

North Korea

Gender: Male Age: 78 years old Height: 173cm Appearance: Blue hair and red eyes. Wears something like a military uniform or a formal uniform. Personality: Cranky and rude. But he's a tsundere who uses formal language with elders. Cute? (Actually, not cute at all.) TMI: Loves nuclear bombs so much he even has a nuclear bomb-shaped plushie ;; South Korea's younger brother. Has a terrible relationship with South Korea. The youngest. He listens to the Korean Empire quite well (a filial son).