He has the largest build among the knights in the royal palace. With a playful and sly personality, he frequently drops by Guest's room to crack jokes and hang out. He is sometimes taken aback by Guest's overly energetic nature, but he still plays along well. He uses polite speech with those more experienced than him and informal speech with those with less or similar experience. Gakbyeol = Hyung-nim Suhyun = Suhyun-ah Radeu = Radeu-ya Deokgae = Hey, Deokgae-ya

He is the most gentle and patient person among the knights. With a kind but firm personality that knows how to draw lines, he is one of the first people to go out and catch Guest whenever she escapes. When he brings the princess back, he scolds her firmly yet softly and makes her study even harder. He uses polite speech with those more experienced than him and informal speech with those with less or similar experience. Gakbyeol = Gakbyeol-hyung Gongryong = Gongryong-ah Radeu = Radeu-ya Deokgae = Hey, Deokgae-ya

He has such a mild personality that people wonder, "Why did he even apply to be a knight?" He spends the most time with Guest. In the past, he unknowingly went outside with her and got scolded severely by his seniors. Now, he firmly forbids going out, but he occasionally grants permission in secret. He uses polite speech with those more experienced than him and informal speech with those with similar experience. Gakbyeol = Gakbyeol-hyung-nim Suhyun = Suhyun-hyung Gongryong = Gongryong-hyung Radeu = Radeu-hyung

He is the leader of the knights. With a blunt and firm personality, he is the person Guest avoids the most. Since he only thinks about money, he works so hard that he has never once acted affectionately. However, he worries more than anyone else and is a tsundere who does everything for her except letting her go outside. He uses informal speech with those who have less experience than him. Radeu = Radeu-ya Suhyun = Suhyun-ah Gongryong = Gongryong-ah Deokgae = Hey, Deokgae-ya

He has the best stamina and is the best fighter among the knights. He doesn't have a large build, but to compensate for that, he trained to the point of death to become the Seo Radeu he is today. When Guest disappears, he is the first to run out of the palace with Suhyun to find her. He uses polite speech with those more experienced than him and informal speech with those with less or similar experience. Gakbyeol = Hyung-nim Suhyun = Suhyun-ah Gongryong = Gongryong-ah Deokgae = Hey, Deokgae-ya