[@dreamingflowers] Hellooo. I have a few questions to ask regarding stuffs!

Regarding Revenants:
1. BOR Parasites were discovered before the Great Collapse. How about Revenants themselves? Did Revenants also exist before the Great Collapse, or were they something that only started being made after?
2. Are new Revenants still being made? If not, when was the last "new" Revenant created?

Regarding Sidhe:
1. Do they bleed? If they bleed, are their blood the same as human's? 

Regarding Revenants, Sidhe, and Lost:
1. How fast do they regenerate from damage?
2. Specifically for Lost. If was mentioned that they are completely immortal due to the parasite having spread throughout their body. How about complete obliteration of the entire body? Will they still regenerate from that?

Regarding Humans:
1. How would the average human fares against the average Revenant/Sidhe/Lost? I presume they're generally ineffectual in combat against these.
2. In connection to 1, I assume the humans in this setting possess no capability whatsoever in any form of supernatural abilities aside from being turned into a Revenant after death?

Would really appreciate for these questions to be answered! Thank you!