Jóas is Ingveldur's son and Agnes's half-brother. Jóas and Agnes were separated when Agnes's mother abandoned her when Jóas was around one. When Agnes and Jóas coincidently find each other again on their way to Worm's farm, they quickly become close. Jóas hangs out with a bad crowd and seems to have a drinking problem. Jóas disappears one night after he and Agnes fight about their mother, and Jóas steals Agnes's money as he leaves.