Characters and a theme

Bjalki: he is a man in King Hrolf's army
Bera:She's a farmer's daughter and is in love with Bjorn. Once Bjorn gets turned into a bear and gets killed, she eats some of his meat at Hvit's urging. Then she had three boys: Elk-Frodi, Thorir, and Bodvar.
Bjorn: Son of King Hring and Hvit's stepson. After refusing to sleep with Hvit, she turns him into a bear. Since he is a man at night, he still meets with Bera and gets her pregnant. He predicts his own death and sets up inheritances for his sons. He then fights to the death.
Bodvar Bjarki: son of Bjorn and Bera, and that's all we really know about him now.
Drifa: daughter of King Hrolf. She is hospitable, which perhaps foreshadows that she will be a peace bride.
Elk-Frodi: son of Bjorn and Bera, he is a man above the waist and an elk below. He gets the least of the treasure left by his father and is very angry about this. He leaves and becomes basically a highway pirate who kills for money.

Revenge: Queen Olaf and King Helgi meet, and the rest of their relationship consists of trying to get revenge on one another. When Olaf turns down Helgi's marriage proposal, he avenges his humiliation by raping her. In turn, Olaf does not tell Helgi he has produced a daughter (Yrsa), and orchestrates the marriage of Helgi and Yrsa. This is a great revenge because, only when Yrsa and Helgi have been married for years and have had a child, does Olaf come and tell the truth, prompting Yrsa to leave Helgi heartbroken and depressed. This tells us the background of Hrolf's twisted family tree, and sets up the other great revenge of the story. Skuld, another child of Helgi, wants to get revenge on Hrolf and on their father. It is suggested that this is because of their dysfunctional family and the fact that she didn't get the life she deserved. The revenge theme could also be suggesting that the idea of revenge is bad as, except in Skuld's case, it never seems to turn out as planned.