There are many stories in which a heroic character penetrates the otherworld and is challenged by some sort of ogre or other strange being. This challenger may question the hero’s worthiness or ability.
Norse myth has two examples of a female quester who faces a challenge to her fitness and an attempt to thwart her in her aims. In Hyndluljod Freyja has to convince the far-from-agreeable Hyndla to help her protegé win a lawsuit, while in the poem Helreid Brynhildar Brynhild is challenged on her way to Hel by a giantess who questions her ethics and actions.
Thumb-sized figurine discovered in Denmark by amateur archaeologist is the only 3D representation of a valkyrie ever found – and will arrive at British Museum in 2014
When you think of gender-bending in Norse myth, the trickster-god Loki springs to mind. Would you be surprised to know that Odin and Thor have also dragged up, albeit not very successfully in Thor’s case? (One of the areas they did not compete in during the flyting in Hárbarðsljóð; imagine how that would have gone.)