Mourners are the "plague healers" of East and WestArdougne. They are in part the subject of the Sheep Herder, Plague City, and Biohazardquests, and are located mostly inside West Ardougne and around its walls inside East Ardougne. They are led by the Head mourner.
Shortly after release, mourners were the subject of a bug, or perhaps oversight, where they were attackable and gave a lot of experience despite having very low hits. This was abused by many notable players to obtain experience abnormally quickly.[1][2]