Murok 'Vadam

Murok 'Vadam was a Sangheili of the House of Vadam, the same clan of Arbiter Thel 'Vadam, leader of the Swords of Sanghelios. In October 2558, Murok relayed the location of the Elder Council Chamber, where Thel and the Swords of Sanghelios were reunited, to Jul 'Mdama's Covenant in the hopes of gaining power and prestige that they promised him. After the resulting Battle of Nuusra was over, Thel discovered of Murok's treachery and had him killed.

This was later noted by the Sword of Sanghelios security officer Mahlo 'Turagg, with the notes on the event later accessed by the Spartan-IVs of Fireteam Osiris.

Trivia
Thel killing Murok is similar to when he murdered Koida 'Vadam. Both betrayed Thel in the hopes of having him killed, and both failed. In the end, Thel killed the two (though he had not Murok's lineage banished from Vadam).

List of appearances

 * Halo 5: Guardians