Finnish actress Krista Kosonen (Alfhildr Enginnsdóttir) does not speak Norwegian and had to learn to say her lines with the correct pronunciation, as well as the ones in Old Norse and Old Sámi, for the role.
Tore Hund (or Thorir Hundr) played by Stig Henrik Hoff is quite a divisive figure in Norway. Through the centuries he has been regarded as a villainous figure for his pagan rebellion against and killing of the christian king Olaf Haraldsson who is Norway's national saint. However, from the 19th century onward there has been a growing movement of Norwegians who consider Tore one of Norways greatest heroes and a symbol of resistance against authoritarian government. The movement is primarily headed by people in northern Norway (were Tore was from) who are usually skeptical to the political power centered in southern Norway, as well as various pagan movements. On Tore's home island of Bjarkøy a statue has been raised in his honor.
In the opening credits there is a shot of graffiti reading: "Beforeigners go home". Beneath there is a graffiti reply reading: "ok, men vordan?" This is misspelled Norwegian for "ok, but how?"
In the first scene when Krista Kosonen wakes up in her bed, fake hair had to be added to her armpits so she would look more like a Viking Age shield maiden.