The Bluebeard figure who appears in Grimm is a less ambiguous villain. The emphasis falls squarely on the dangers of marriage, and the tales feature a plucky trickster heroine who gets the better of her would-be murderous groom. He figures in two of their most mysterious and powerful stories, 'Fitcher's Bird', and 'The Robber Bride groom', one of the earliest stories the Grimms collected.
I find this very interesting because a criticism that is often levied at fairy tales is their enforcing of patriarchal values. This lesson thought by the fairy tales still in a way assumes patriarchal society but it doesn't treat finding a husband as the end goal but as something that can have it's own concerns. This isn't princess marries prince charming because he showed up. It is more like princess thinks about if prince charming is gonna murder her instead of naively following him.