I'm not an expert on the Hive, so bear with me. There are 7 sects in the Hive force. The Hidden Swarm-commonly found on Earth, most likely the Hive's main force The Blood of Oryx-servants of Oryx, as the name suggests, found on the Dreadnaught The Silent Brood-they act as wardens of the Dreadnaught's prison, found in the deeper areas of the Dreadnaught, like in the Darkblade strike Spawn of Crota-Crota's servants, found on both Luna and Earth The Cult of the Worm-found in the Prison of Elders The Venom of Oryx-an extremely rare sect, found only in the First Firewall mission. May be Oryx's elite. The Scarlet Brood-Unknown. Remember Urrox, Flame Prince? Hive boss in the level 32 PoE, real pain to take down with his habit of lighting the ground on fire? He may be the missing link. His grimoire states that he kept(past-tense, important) watch of a long forgotten brood. That may be the Scarlet Brood, especially because of Urrox's special figure. But he isn't the only one of his kind. Swordbearers bare a striking resemblance to Urrox, with the glowing...scarlet...vein-like structures and the 5-pronged head, Swordbearers may have been Urrox's Scarlet Brood. But they're not the only one of their kind, as we're missing Acolytes, Thrall, etc. Whatever happened to the Scarlet Brood, their numbers have dwindled so much that only a handful of them exist. And remember, TDB was before HoW and the Prison. Meaning that chronologically, it would make sense that Urrox would be the only one left. [spoiler]But OP, what about the Swordbearers in Last Rites? -I'm getting to it.[/spoiler] The Swordbearers in Last Rites could be Swordbearers from the Dreadnaught. Urrox most certainly would not have known this, because the Dreadnaught was Oryx's personal ride. Even if Urrox did know of other Swordbearers in the Dreadnaught, he couldn't watch them. At around HoW, Oryx had probably just noticed Crota's missing tithe. The Dradnuaght wasn't on the other side of Saturn then, it was most likely at the far reaches of the Solar System. Point is, he was far away, and Urrox couldn't lead them from such a great distance. And this is only if he knew that Swordbearers still remained. [spoiler]What about the Hive seen with Urrox? Cult of the Worm. Probably a bunch of captured Hive, along with a captured Urrox, banded together. But the could be all sorts of different Hive.[/spoiler] [spoiler]I suppose Taken Hive also count, or just Taken in general as a faction of the Hive.[/spoiler]