Wiglaf is presented as an honorable, brave, and a loyal man. Even though his companions aren't brave people who wish to battle, he reminds them of the anglo-saxon values and chooses to help, instead of cower. A true warrior should never back down from a battle according to him, and he remains loyal and helpful.
In his speech to his companions, Wiglaf urges them to remember their duty. ... Throughout this passage, Wiglaf is presented as a model of loyalty. He is the only one who doesn't give up on Beowulf, and doesn't leave him to die after his fight with the dragon.