While Calus was/is the emperor of the cabal making him a pretty big character already and his exile was the main reason why the cabal came to our galaxy as well as the red legion under the command of Ghaul. He plays an even bigger role that we will see in the future of the destiny universe. (Assuming bungie and Activision don’t scrap destiny.) While the lore on most of the raid gear is pretty interesting and goes in-depth into the cabal backstory. The lore that really caught my eye was the ones on it stared back (the sword) and I am alive (the grenade launcher) The lore for it stared back goes on about through Calus’ travels on the leviathan after he was exiled. The leviathan had traveled to the edge of the universe and there it came across a wall of void and something lurking in it. [quote] The Leviathan came to a halt before a wall of infinite void. It could go no further, as the navigation system had suffered a cataclysmic failure. The course that the conspirators had set crossed a space that simply didn't exist. I don't know how long we traveled. Years? Millennia? Time had ceased to have meaning as I wallowed in the despair of my exile. But this event shook me out of my stupor. At the edge of the universe, we had found something. No—we had found a nothing. From the seat of my observation chamber, I stared into the perfect void. Only I, a god, could understand what I witnessed. It was a thing greater than myself. And if such a thing exists, then I, too, can become more.[/quote] Ignoring the narcissism, this explains how Calus gained his control over the void that we see in the boss fight for the leviathan. But this begs the question...what exactly did he see out in the void that granted him this ability? The ahamkara dragons, the worm gods? For the longest time I believed it was a wormgod due to the nature that Calus talks about how the being had opened his eyes and in the flavour text it says that he would become its herald. But then I got the grenade launcher and it’s lore changed everything. [quote] When the end comes, I reserve the right to be last." —Calus, Emperor of the Cabal Now I've seen everything. We were all so wrong. All of this—the machines, the Eliksni, the worms, the Light, the Nine. All of it meaningless. This galaxy is tumbling toward a singular conclusion and there is nothing—no one—that can stop it. How could I have missed this? It's the small moments, the simple pleasures that matter. They're all I can think about now. Food and drink aren't mere sustenance. They're a reminder that I am alive. This Leviathan. This prison ship. I will remake it, as I have been remade. No longer will it represent a mythical beast from the dreams of worms. It will serve as an icon for my newfound gluttony.[/quote] This is scary. Not only did he encounter something far more powerful than the nine, the light and the worm gods. But he knows exactly how this all ends. This along with his cabal influence makes him very powerful, putting him up high on the food chain roughly around the same level of Oyrx. What he met is the darkness itself which makes sense due to how powerful it has been described and he knows it’s coming to destroy everything, so that’s why he believes that by serving the darkness he will be spared but the darkness is just playing him and all of the enemy races so that it may kill every single las living cell in the universe. It’s unclear how, but Calus has a bigger part to play in the grand scheme of things and I would expect to see lot more of him in the future. Edit: Just to clarify Calus isn’t on Oyrx’s level for fighting capability anyone in the destiny universe could kick his ass no problem. Calus is on Oyrx’s level because of his knowledge, power and influence. He doesn’t care about winning or conquest that’s part of the reason why he was overthrown as the cabal emperor. He only cares about wealth and power, so he believes that by siding with the darkness he will survive the end the darkness have planned (which he won’t cause the darkness is playing him and every other enemy.) and will become a god.