“Your judgement has waited long enough"
"

Arbiter was once an honorable and sacred rank within the Sangheili military. In a sense it was an extension of a general and would be awarded to individuals with extraordinary skill in combat and tactics. Perhaps even a rank which was passed down through generations within a clan.
To establish their hierarchical superiority, the San 'Shyuum (Prophets) pronounced this once highly regarded rank as "shameful" with only one path to salvation- death in line of duty. This change may have happened after a rebellion of a single Sangheili Arbiter, who stood against the irrational ways of the new Covenant.
From that point on the Arbiter would serve as the executing blade for the Covenant, a direct messenger of the Prophets. The rank of Arbiter would be used in the times of need. It would be given to skilled warriors who have in some way shamed their name. They would be tasked with suicidal missions, when fallen, another would take their place and the rank.

YouTube - Video Request .:Arbiter by xSoGx Grim:.

-Although this project represents the Arbiter as a general idea, it was modeled greatly after Ripa Moramee of "Halo Wars."
From early youth, Ripa trained with two blades and thereby carried the insignia of his clan. With his formidable prowess over any other sangheili (8'1") he quickly rose through the ranks within the Covenant and gained the reputation of a brutal and heartless killer. Even during his unit's investigation of Forerunner relics, he would execute anyone on the spot who ventured too close believing that no one was worthy to come in contact with the relics except for himself.
Ripa took place as the commander during one of the major grunt rebellions crushing the Unggoy, and in another action defeat the Jackal prince and his forces. Later Ripa Moramee led an assault on his clan's keep at Decided Heart. He was defeated and thrown into prison for his attempt and failure.
He was successful in a breakout with a use of a ripped out guard plasma turret only to be hunted down, captured and sentenced to death.
Were it not for the Prophet of Regret the sentence would have been carried out. Instead, Ripa Moramee ascended as the new Arbiter and was tasked with the extermination of humanity 20 years before the events of Halo 1.

Screenshots:

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Again special thanks to xSoGx Patriot for the sick cover.
And Rifte Gifle for an outstanding job with the video.
More content coming to the thread soon.