Captain Sdiar is a Shayzien captain found overseeing the operations at the Shayziens' Wall.
When initially asked before Chambers of Xeric was released, she told the player that she was planning an assault on a lizardman settlement past the wall, and that it would be a while before it began. Later on, when the Chambers of Xeric were released, she was upset to find that the Varrock Museum and Arceuus historians decided to send an expedition to Mount Quidamortem, she opened the wall and expressed displeasure with the expedition.
- Her name, Sdiar, spelled backwards is raids, which is known by players as the Chambers of Xeric.
- The dialogue mentioning the armour is a reference to the fact that high-tier armour for all three attack styles were polled three times as a raids reward and failed.