The characteristic of Grendel that is mentioned in the story is option D. He eats human beings.
Grendel is a character in the Anglo-Saxon epic poem Beowul which is depicted as a monster and to add to his monstrous description the poet details how Grendel consumes the men he kills.
Grendel is introduced as a coward, a monster, and an insensitive character. According to the story, Grendel was referred to as "spawned in that slime,” a biblical allusion to the story of Cain and Abel.
