User blog comment:Zathronas/Speculative author: Where are the Grimm?/@comment-23790511-20140914035557/@comment-23790511-20140914050351

They certainly aren't misunderstood since we understand little about them. I was merely implying that perhaps they are beings who dislike all forms of change which can upset their quiet dark. Maybe they're not so extreme as to trim an out of place weed or stomp out a new species (humans). But when that species clearly shows itself being capable of producing great change, that's when they intervene before the balance they had before can be upset ("sought to return mankind and all of his creations to the void..."). So basically, they're the most extreme creatures of habit. Although, I think compared to the Reapers, they may be slightly more relaxed.