User blog comment:ND999/Daemons of Runeterra/@comment-24430045-20150707235017

Very interesting, I like your ideas. Tying these fear-based champions into a sort of unified, terrifying race is a good one I think, it gives their scattered and odd stories some cohesion which is more than Riot has done for these champs in a long time.

As for Vile Maw, though, I sort of figured that the Black Mist affects different creatures different ways,  so perhaps there was a spider/animal spirit that lived on the Isles before they were Shadowed.

That's my guess anyway. I'd love to hear what you think about other gaps in the lore as well!