Doctors appears in the series. He/she take care of the wounded/injured and sick people. They can be found in village or cities. He/she run the Infirmary. Once the main protagonist successfully recruit a doctor, he/she will open an Infirmary in the Headquarters. They were assisted by the Nurse. In Suikoden IV, the doctor in the infirmary will treat the main protagonist with fee. While in the other series the doctor cures only the patient and not the protagonist.