A related tale is that of Bothvar Bjarki. He was the son of a king of Norway named Bjorn ("bear"), whose wife was named Bera ("she-bear"). Bjorn was cursed to become a bear during daytime.
Bjorn and Bera had three sons: Moose-Frothi or Elk-Frothi, who is a moose/elk from the navel down; Thorir/Dog-foot, who has dog's feet; Bothvar Bjarki (bjarki="little bear"), who looks human. The boys grow up and go their separate ways.
One day, Bothvar comes upon Moose-Frothi's hut and waits for him. When his brother arrives, he does not recognize the hooded stranger and wrestles him to the ground, whereupon the hood falls away and Moose recognizes Bothvar. Telling Bothvar he is not strong enough, Moose cuts his own leg and has Bothvar drink some of his blood, which makes him much stronger.
The next day, while Bothvar is getting ready to leave, Moose stomps on a rock with his hoof, creating a depression. He tells Bothvar that he will know how Bothvar dies by observing the rock: if it fills with water, Bothvar has drowned; if with mud, Bothvar has died of illness; if it fills with blood, Bothvar will have died from violence.
Bothvar then sails to Denmark, heading for the hall of King Hrolf Kraki. Along the way he lodges at a small farm, where the wife tells him that their son, Hott, is being bullied by the king's men. He is kept in a corner where the men throw bones at him during meals. Bothvar reaches the hall when the men are out; he sees a pile of bones in the corner and a scrawny dirty boy there. He pulls him out and seats him next to Bothvar.
When the men return for the evening feasting, they continue to throw bones at Hott; when one throws a whole leg of an ox, Bothvar catches it and throws it back at the man, killing him. Complaints to King Hrolf fall on deaf ears, as Hrolf declares that the death was justified and wishes to take Bothvar into his service.
As Yule approaches, King Hrolf's men begin to show fear; it turns out that a monster comes to the hall each Yule and kills cattle and men. Bothvar waits outside on Yule, and kills the monster when it arrives, having Hott drink some of its blood, which makes Hott stronger.
Versions of this story appear in Hrolf Kraki's Saga and in the Gesta Danorum ("Deeds of the Danes") of Saxo Grammaticus. It is also mentioned in a. reference to the Skjöldunga saga, a lost work about the Scyldings (the Danish dynasty mentioned in the opening lines of Beowulf). In some versions Bothvar fights as a spirit bear.
Hrolf Kraki was a semi-legendary Danish king of the early 6th century. He is one of those figures who made such an impression that—like Arthur of Britain—stories sprung up around him, like that of Bothvar Bjarki. He also has a direct link to Beowulf, since he was the nephew of Hrothgar, whose hall is menaced by Grendel.
We are going to stay in Northern Europe and look at Hrolf Kraki next.