Read the excerpt from Grendel . I was safe in my tree, and the men who fought were nothing to me, except of course that they talked in something akin to my language, which meant that we were, incredibly, related. I was sickened, if only at the waste of it: all they killed—cows, horses, men—they left to rot or burn. I sacked all I could and tried to store it, but my mother would growl and make faces because of the stink. How is Grendel characterized in this excerpt?