Rtas 'Vadum (Earth-8756)

Rtas 'Vadum (formerly 'Vadumee), nicknamed Half-Jaw, is an influential sangheili and one of the highest-ranking military leaders of the Swords of Sanghelios. He became a hero among the sangheili and other species' dissidents from the Covenant for his bravery and leadership in the face of betrayal at the Great Schism. Alongside Arbiter Thel 'Vadam, 'Vadum was responsible for negotiating the tense alliance between the Swords and the UNSC, and later on, the Treaty of 2552. Formerly a Special Operations Commander in the Covenant Special Operations stationed at the Fleet of Particular Justice, under the command of 'Vadamee, until the Battle of Installation 04, where he battled for his life against a xenomorph outbreak, losing his jaws. After the Great Schism, he led the pursued sangheili alongside the Arbiter, allying with humanity and leading the Fleet of Retribution during the Battle of Installation 00, ending the Covenant once and for all. After the end of the First Contact War, Rtas continued to lead the Swords of Sanghelios as a military leader.