How are the brave characters contrasted with the characters that is not brave in Beowulf?

In Beowulf, the brave characters display courage, selflessness, and loyalty in the face of danger, such as Beowulf himself and his loyal warriors. In contrast, characters that are not brave may exhibit fear, selfishness, or betrayal, such as Unferth who doubts Beowulf's abilities or the cowardly retainers who flee during the dragon's attack. These contrasts serve to highlight the qualities of bravery and valor that are revered in the poem.