Tremonius

Tremonius was a Jiralhanae Chieftain in the service of the Banished. During the Battle for Zeta Halo, he held the position of Warlord, serving as one of War Chief Escharum's lieutenants, as well as commanding the Banished forces at Outpost Tremonius.

During the Battle for Zeta Halo, on January 31, 2560, Chieftain Tremonius made a name for himself by leading a successful assault that wiped out the primary UNSC survivor encampment at the wreckage of the UNSC Mortal Reverie. To commemorate his accomplishment, the War Chief of the Banished, Escharum, decreed that the first of many planned Banished strongholds on Installation 07 would be built at the site of Tremonius's victory, and would be named Outpost Tremonius in his honor to inspire the other Banished leaders.

On around May 28, Tremonius was in the House of Reckoning when the Banished's leadership received word that Spartan-II Master Chief Petty Officer John-117, who up to that point had been presumed dead, had destroyed the Ghost of Gbraakon. Infuriated and alarmed by the Master Chief's return, Tremonius began to sharply criticize Escharum's plans, even going so far as to disrespect Atriox. This led Blademaster Jega 'Rdomnai to forcibly restrain and threaten the Jiralhanae Warlord. Escharum assured the bitter Tremonius that the Spartan's reappearance would provide the Banished with a much-needed challenge, and ordered his underlings not to interfere with the Spartan's activities for the time being.

Tremonius wore shielded power armor and a Jump pack. He wielded an MLRS-2 Hydra and a CQS48 Bulldog and also carried M9 fragmentation grenades.

As with its predecessor, the MLRS-1, the MLRS-2 Hydra is a semi-automatic missile launcher equipped by infantry forces for use against other infantry and vehicles. The weapon is arranged in a manner similar to a conventional rifle, albeit with a more angular body than its predecessor. The fore of the weapon contains a revolving cylinder which stocks six 9X-G High Explosive, Air Bursting (HEAB) gyroscopically-stabilised missiles. These missiles can be individually-fired by the operator with a semi-automatic fire mode in either dumb-fire or locked-on to enemies. When locking onto enemies, the weapon's integrated semi-automatic tracking and targeting systems allow the operator to target enemy infantry or individual parts of vehicles for the missiles to home in on.

The CQS48 Bulldog is a pump-action combat shotgun which fires 12-gauge shells from a seven-round rotating drum. After every shot, the foregrip must be retracted and pushed forward again to work the weapon's action and rotate the cylindrical magazine into the next position.

The Ukala Workshop Spike Revolver, also known as the Mangler, is a sidearm developed by Ukala Workshop and manufactured by Saizos Armory. The mangler is a highly powerful handgun that fires spike projectiles with close-range precision and immense stopping power. It heavily resembles a human revolver, with an eight round swing-out cylinder reloaded using a speedloader-like device. It fires large spike rounds likely using an explosive charge or powder encased in red metallic cartridges. The actual projectiles are perfectly cylindrical before firing, and appear to warp somewhat after firing, indicating they may not be completely solid. The mangler also has a pair of tandem bayonets arranged in a tusk-like formation under the barrel for melee attacks. For centuries prior to the Jiralhanae's alliance with the Covenant, the mangler was employed by Jiralhanae warriors and hunting packs.

The Riven variant of the Manger bears a painted white colouration, and fires three split-shard spike projectiles when the trigger is pulled. It has a lower rate of fire than a standard Mangler.

The Shea'p is a fully automatic plasma turret with a high rate of fire. As with many turreted weapons, it can be detached from its base to be fired from the hip, though the weapon is left with a limited energy charge. Additionally, once it is detached, unlike its human counterpart, which does not overheat in any situation, the detached plasma cannon overheats after firing 13% of its reserve energy; though it can be vented at any point after sustained volleys. The mounted plasma cannon is also employed as the side turrets on the Phantoms, while the detached turret is typically wielded by Jiralhanae Chieftains.

The jump pack is a high-mobility propulsion unit used by the Jiralhanae jump pack specialists of the Covenant and the Banished.

The United Nations Space Command (UNSC) is the military, exploratory, and scientific agency of the Unified Earth Government (UEG) and has acted as the emergency governing body of the human race at large for a time.

The Battle for Zeta Halo was a large multi-faction battle that took place starting on December 12, 2559, prominently between the United Nations Space Command and the Banished on the Forerunner Halo Installation 07, otherwise known as "Zeta Halo", and continues as of around mid-2560. The earlier stages of battle ultimately led to the death of Cortana, the deactivations of her Guardians and the splintering of the Created in various fiefdoms and fledgling cells while simultaneously severely damaging Installation 07, making it a turning point of the Created uprising, although the conflict itself continued as of 2560.

The Banished are a multi-species confederation of pirates and raiding clans. Acting as mercenaries, the organization's goals have been described as attaining power in their raids across the Orion Arm, while their killers and mercenaries plunder treasure in the name of their own free will.

They were formed and led by the Jiralhanae warmaster Atriox after rebelling against the Covenant. The Banished are primarily composed of Jiralhanae and have incorporated Sangheili, Mgalekgolo, Unggoy, Huragok, and Kig-Yar, as Atriox denounced vengeance between species as a petty restriction in the way of gaining rewards and treasures.

Jiralhanae are a carnivorous, sapient species of mammals who share physical characteristics with Earth's gorillas, rhinoceros, and bears; due to their bear-like features, they are designated pseudo-ursines. They have thick skin that ranges in color from dark grey to dark and light brown and makes them highly resistant to harm, and their bodies are covered with matted tan, grey, white, brown, rust-red or black fur. Some Jiralhanae, such as those of the Vheiloth skein, shave their fur, with higher-ranking individuals sporting beards or mohawks. Pale fur and skin are considered extremely rare.

Outpost Tremonius was a Banished Forward Operating Base established on the fragmented section of Installation 07 during the Battle for Zeta Halo and commanded by its namesake, the Jiralhanae Warlord Tremonius. The outpost was built around the crash site of the UNSC Mortal Reverie, which had crash-landed on Installation 07 during the space battle above the ring.

Following the dissolution of the Covenant, the remnants of the Bloodstars were absorbed into the Banished. Atriox created a new iteration of the unit and tasked it with a new purpose of hunting and killing dangerous enemies; against the UNSC, this translated into killing Spartans.