I believe that would be a Cell :)
There is certainly a rhythm to Grendel's warlike appearance here. He is personified as the devil or devil-like. The author uses alliteration to add impact to a galloping like pace in which Grendel advances (ex. bogs- bearing / trap-trip / God -Grendel).
Id but have a good day management
what do i have to read in order to answer i cant sort things out if you dont have the text for me to read