and I just was looking at some concept artists website and came upon a "protected" Thor Dark World Storyboard gallery. Can't get to the gallery unfortunately but on the image for the album is likely a piece of the storyboard showing Hogun and part of Fandral.
Interesting look for Hogun, with possibly "marauders" standing behind him? and in the Fandral one it appears there is a female with her hair up. I would say taller than Jane.