Grendel is a character from the Old English epic poem Beowulf. He is depicted as a monstrous creature, descended from Cain, who terrorizes the mead hall of Heorot, ruled by King Hrothgar. Grendel's attacks on the hall symbolize the struggle between good and evil, as he preys on the warriors who gather there. In the poem, Beowulf, a hero from the Geats, arrives to confront Grendel. He battles the creature without weapons, showcasing his strength and bravery. Grendel ultimately meets his end at the hands of Beowulf, marking a significant victory for the forces of good in the narrative.