Grendel has a sarcastic and cynical mind, which serves to entertain both him and the reader. Through his expositions of situations, we see humor where others would simply see violence, and irony where others only fact. These others are the humans, the Danes, unwitting neighbors of Grendel, forced to stand night after night of slaughter. What is a traumatic and terrifying experience for them, is simply a game to Grendel, and the reader. Grendel bursts in on the Danes, ready to kill, and they squeak. They are funny in their fear, laughable in their drunken fighting. The reader is focused on Grendel's perception of the Danes. The deaths go by easily, because of the humor involved. It does not cross the reader's mind that these are people Grendle is killing. The humor allows the reader to sympathize with Grendel's position, that of the predator. The prey is not meaningful, only nutritious and entertaining.
It is a macabre humor, which accentuates how no death is noble, it is simply death. By making the Danes un-heroic and un-ideal, cowards and drunkards, the author is presenting the reality through the humor.
In contrast to the drunken lurching of the others, Unferth comes toward Grendel with speeches and bravery. He is a puffed up as a peacock, proud and ready to die for his king, his people, his ideal. Grendel simply states, "He was one of those." Grendel sees Unferth with a clear and unbiased mind. He is ridiculous. His exaggerated heroism, his words, even his first move, to scuttle sideways like a crab from thirty feet away, is laughable. Grendle does with him what he does with no other Dane in the story, he talks.
Unferth offers Grendle death, and Grendle sends back taunts. The reason this scene is funny is because the...