They are known as the Fae and seem to be based on a variety of Midgardian mythology, though the primary basis is in that of the British Isles. Of course, I've been to Otherworld numerous times myself, which you could consider the Brits' version of Asgard if you've never heard of it, but this realm is distinctly separate. It's as if someone tossed all the pantheons in a blender and called it a day.

[There are frost giants here, for example, but they're classified as beasts, same as humans, so Loki would rather not mention that.]

The Court Rulers would be similar in strength to me, if this was an ordinary story. But it is their story and so they appropriately rule over it. As you've pointed out, they can keep me here. Presumably they can nullify all of our powers if they so wish. I believe they let us keep what they find interesting. We're toys, in that sense.

I've been doing my best to get close to them, see what information I can gather and try to assert my influence. I doubt they see me as little more than a pushy pet, but I can work with that.