Hey, originally, I created a quick Osiris theory awhile ago, I'm back to reforge it. Now, if you read Egyptian and Greek mythology, you will see many things that are destiny related. Such as: The Tale of Osiris, The Exile from Egyptian mythology. Now, Osiris was a rightful ruler of an Egyptian throne, powerful and smart, well loved by his subjects. Though his greedy brother framed him for a terrible crime, resulting in his banishment and his brother taking his exalted position. We're going to jump into Trials of Osiris flavor text for a quick second. In many, the text refers to the Speaker, most in a questioning and suspicious way. They state of the Speakers ignorance, corruption and danger. They speak of the Speaker turning master and apprentice against each other, despite his name, saying nothing of value and how he got his power in question. These come from Osiris' recorded logs or from Brother Vance as citation. Now, finally my theory. The Vanguard refers to Osiris many time when facing incredible flew bred out of the darkness. He was once an esteemed warlock, hunting in the secrets of the darkness. When he stumbled upon a secret not meant to be discovered (maybe about the Speaker) The Speaker needed him to be rid of, so he framed him claiming he had learned too much about the darkness and was consumed by it; As said in a Vault of Glass Armor piece, he came too close to understanding the Vex. Osiris was framed and he took his most loyal followers with him and created the trials of Osiris. This was an attempt to see who was worthy enough to serve him and break free from the Speakers curse. Osiris was framed by the Speaker when he learned too much about the Darkness or the Speaker himself. As a side note, a cloak sold by the Speaker for the Hunter is quite interesting. It is called Cloak of the Binary or Trinary Star. This Cult is focused about the Traveler, cursing its light. Maybe the Speaker is from this cult? Secretly trying to destroy the Traveler? Well, there you go, that's about it! Comment if you have more about Osiris or anything about the Speaker!