Here is a drawing from the great comic book artist P. Craig Russell's adaption of Wagner's Ring of the Nibelung. I'd like to see more of this kind of thing.
If you want to know more about Wagner's Ring Cycle, but you don't have access to Russell's comics, which, after all, were published twelve years ago, and don't have sixteen hours to devote to the operas, I suggests that you have a listen to Anna Russell's 1953 explanation of it. She sums things up quite nicely.
Nibelung
Nibelung
Nibelung
Nibelung