[quote=Crabmeat]
I think this predates Hel's reign which is after the jötnar settled in Jotunheim. I don't know.Thanks for opening it up with the mention of Niffelheim. Norse mythology is fascinating ^_^
[/quote]

The Frost Giants of Norse Mythology did indeed live in Niflheim originally, from what I recall, before moving/being banished to Jotunheim. Being Loki's daughter, Hel came much later, and turned it into... well... Hell.