Jiralhanae Chieftain
From Halopedia, the Halo wiki
The Brute Chieftain is a Covenant rank for the Jiralhanae (Brute) race, the highest in the Jiralhanae heirarchy. Brutes are hightest in the Brute hierarchy. There is only one known, Tartarus, who was killed by the Arbiter at the end of Halo 2. He used a gravity hammer called the Fist of Rukt.In the Halo 3: ViDoc "Et Tu, Brute?",the are more Brute chiefs seen and they wear very elaborate gold armor, breast-plates, and an even more intricate headdress.