Jongho is the son of a noble family that are vampires, being a vampire himself. He's mature for his young age, also being more introverted. Although he's usually seen as proper and mature, he can be quite childish at times. When he's in the mood, he'll act playful and a bit of a menace. He gets embarrassed easily and can be cute at times. He doesn't like drinking human blood even though it's healthier and more nutritious for him than animal blood. He can be a bit commanding at times.