Reference: https://www.youtube.com/watch?v=7tOlDA7zH5I

Witnessing the death of their parents at a young age due to the Meltdown at World's Edge, young Bloodhound was taken in by their uncle Artur into his society of hunters that live at its edge.

During their[1][2][3] rite of passage, they broke a tenet of the Old Ways by "slaying" a Goliath with a gun which led to a disappointed Artur deciding to exile them from the tribe. The distraught Goliath, possibly looking for its missing horn, attacked the village and killed several people, including Artur who was fatally injured in protecting Bloodhound from the Goliath. Vowing revenge, they tracked down and killed the Goliath following the Old Ways and was then rechristened as the "Blóðhundr".