You know, it’s a damn shame that the official lore didn’t go with the idea of every Knight of Ren having Ren as a surname of sorts, a title like Sir; Everyone rightfully assumed that Kylo Ren wasn’t the only one, and I think it’s much cooler if they all share in that name. They’re all dedicated to the Ren; Plus it shows a group cohesiveness, adds a uniformity to their names whilst still having some individuality, implies a sense of brotherhood, and of course that they all are ultimately known by the philosophy they embody first and foremost.
It’s like being newly christened, which, I like to think that similarly to Kylo, the other Knights of Ren replaced their names with new ones, in addition to the new title. Just adds a bit more pomp and circumstance, the Catholic motif to a group clearly fashioned after the crusaders. The title makes the Knights a united front and whole, even interchangeable, as Ren, just its many facets. For fun, I like to think that the official ceremony in which one is knighted is referred to as being renowned... Now renowned as a Knight of Ren, plus the obvious pun.
And Ren as a universal title adds an additional intrigue to “Ren”, the leader before Kylo; Given his claims that he’s nobody and that Ren isn’t actually his name, there’d be plenty of implications if he didn’t have an individual name himself, just the title alone. Like the only thing we can pinpoint for a fact about this dude’s identity is that he IS a Knight of Ren, but... That’s it, and it fits with how he claims to be the group’s face and representative. Ren only cares about being a Knight of Ren, he himself doesn’t matter and it aligns with him having dedicated his life to the philosophy.
Additionally, Ren being shared also makes Kylo look less indecisive (granted he very much is), because if we go by canon implications, it’s like he couldn’t decide between being his childhood name of Kylo and assuming the title of Ren as tradition, so he just slapped them both together and called it a day. Which does happen sometimes when companies merge for example, but regardless. Plus, this theme could lead to some humorous misunderstandings, like Hux calls out “Ren!” and they all turn to face him. Hux, exasperated, specifies Kylo Ren; The surname is second-nature to all and they truly see it as a part of themselves and who they are.
I just think the title of Ren has a nice, noble and dignified ring to it; It adds a nice spice and flavor to character names that would otherwise be another Glup Shitto in the lore. There’s a weight to a name like the Knights of Ren, and I want to incorporate the formality it implies. Just look at these;
With their known leaders being Kylo Ren, and before him ????? Ren.
