Doppo has a meek and anxious personality. Generally, he is a kind-hearted person, always ready to help his friends. Doppo speaks in a polite tone of voice and remains formal and tense, often seen as a pushover by many and having a difficult time standing up for himself. Due to Doppo’s several mental disorders, Doppo tends to have a habit of over-apologizing for all his actions that could annoy someone else, even when it’s not his fault.