Have you been stealing from C J Cherryh?
One of my first thoughts (after, like almost everyone else, “We’d probably try to kill them”) was that many Christians and Jews would identify the Yon as Nephilim. The Nephilim are only mentioned briefly a couple of times in Genesis and the meaning of these passages is open to interpretation, but they are described as unusually large, long-lived, and perhaps not entirely human. That fits the Yon well enough. Skald has left the question of whether their men would be sexually interested in human women open, but if they are then that would further strengthen the association with the Nephilim.
Those who take a non-literal interpretation of Genesis would probably not attribute great significance to the similarities between the Yon and the Nephilim, they’d just think “Huh, I guess encounters with the Yon may have inspired that story like so many others.” Biblical literalists are likely to fear that the Yon will lust after human women and will be generally hostile to humanity or God’s followers. The Yon may even be seen as fallen angels or the descendants of fallen angels and human women.
Since the Nephilim are first mentioned in Genesis just before the story of the flood, a certain stripe of fundamentalist Christian may take their “return” as evidence that we’re living in a sinful era and that God will soon wipe away the wicked. Those who believe this will probably feel it’s best to just avoid the Yon and prepare for the end times.
Lawyer up. There’s going to be a bunch of cases being filed in order to determine what the legal status of Yon are. Starting with whether or not they are legally people.
And while we’re at it, we should be looking into what our legal status is under Yon law.
Ummm…elves don’t already exist?
No.
[del]We[/del]The orcs
ate
them.