Is there a lore background to Alfgar/Roysia (among other criers)? Also, a GM Question

[Jacien]

Just some backstory rambling in the quote. Main question is just below.

I was always wondering who Alfgar is (along with Roysia). I remember them first appearing back when a GM-controlled Urianger appeared at the camps. They would basically say "Don't listen to Urianger!"

Then they appeared again when the Imperial Behests came at the level 20 Camps in the 3 main areas. Alfgar would pop in the city, Roysia would be at the camp to guide you to the Militia Outrider.

Then the newer Imperial behests happened at Camp Glory and Camp Emerald Moss. Camp Glory would happen 3 days in a row, then a wave would appear at Emerald Moss on the fourth day. However, now more criers were introduced.

Camp Glory behest - Limsa: Saintrelmaux, Ul'dah: Bloehyr, Gridania: Hadrian, and at the camp was Elvide.
Then Alfgar and Roysia would appear for the Emerald Moss behest (Alfgar would be at city, Roysia at camp).

Now recently, we have Alfgar leading you Addison to do a Dalamud cult behest. No sign of Roysia.

Now I was wondering, who exactly are these town criers? I did notice that Alfgar seems to have a relationship with Roysia (he expressed worry that Roysia would be harmed during the Emerald Moss one).

Alfgar: They were seen in the vicinity of Camp Emerald Moss, where Roysia is at present. Gods, if any ill should befall her, I...I know not whether I could go on. I'd hunt down the imperial whoresons myself, but like as not I'd end up tripping over a tree root and impaling myself on my own paring knife. Ah, if only some valiant souls would volunteer in my stead, there'd be no end to my gratitude.

But more importantly, they're all dressed in the same attire. So are they just an independent non-profit group that wants to spread the word of the craziest stuff going on in Eorzea? I guess they're kinda based on Heralds shouting stuff and whatnot.

Also I'm curious, who exactly were the associates at SE that would jump on the GM accounts for certain celebrity accounts (like Urianger and Petyr) and scare/interview players?