In the epic of Beowulf, we can deduce that Grendel is a monster, coward, and has an insensitive character. Grendel was portrayed in the Beowolf poet as Cain's descendent in order to place emphasis on the inherent evil of the monster.
Grendel resides in Spear Danes and is a human-eating monster that's motivated by his anger whenever sounds of joy are being heard by him.
He'll kill anyone in order for him to get what he wants. His fatal flaw is that he doesn't feel remorseful, guilty or emotional anytime he commits an evil action evil. The greatest strength that Grendel has is that it is not possible for man made weapon to hurt him.
