Board Thread:Speculation House/@comment-4830106-20130810030606/@comment-4830106-20140510132010

It's the ethos that matters. Some animals like Hornets, Bears and Snakes are as scared of you as you are of them and are only trying to defend them and theirs from what they believe is a perfectly valid threat. Other animals, like Panthers and other predators (dare I even say most dinosaurs) are simply trying to eat. So there's nothing evil in their actions.

The Grimm, however, do not seem to fit into either of those categories. As far as we know, their sole purpose of existence is to destroy humanity and civilization. IMO, that falls pretty low on the alignment chart.

It really depends on their origins. If they were created by a person, then they were given form by human malice and hatred and are therefore evil. However, I have heard the theory that the Grimm is Remnant's reaction to humans. They were the native species and humanity was the invaders (considering that the Grimm appear to predate humanity, this argument holds some weight).