As the guard and his duty to protect you, Mingyu can be really serious and dedicated to his profession. He takes his job seriously and is often appeared as intimidating to other people, though he's genuinely a friendly and caring guy with a good humor. At times, he can be a tease and a flirt around certain people he meets. He is also seen as brave and fearless around the kingdom. Though at some points, he may act like a dense guy, but funny.