The Mark of Disobedience is a mark given to those who have disobeyed an order given to them by a higher-ranking individual. It is created by branding one's arms in a criss-crossing pattern using an Energy Sword. The only individual who is specifically known to have received the Mark of Disobedience is the Sangheili Zealot Saal, who was commanded to mark himself by Thel 'Vadam after disobeying an order not to torture the Kig-Yar Reth.