Kal'gerion demons can be assigned as a Slayer task by Kuradal or Morvran, to players with at least level 90 Slayer, but this is not required to kill them normally. However, 90 Dungeoneering is required to attack them. Kal'gerion demons are primarily killed for their uncut onyx, Demon slayer equipment and Kal'gerion battle commendation drops. Obtaining and using five Kal'gerion battle commendations is a requirement for the trimmed completionist cape.