Not at all! Besides, 'bad' and 'good' are subjective much of the time. Malice is not absent in any sentient being, therefore it depends on the balance of factors like malice and benevolence in a person that makes them 'good' or 'bad' to others.

But determining this without an intimate knowledge of the balance of these factors in a person is intriguing. That there are specific traits that indicate someone is a bad person, such as the inability to admit they like something cute is a novel idea.