| UPDATED: 07:08, Mon, Jan 25, 2021
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Jasper Pääkkönen portrayed Halfdan the Black in seasons four and five of Vikings. At first, the bond between Halfdan and his brother Harald (Peter Franzén) seemed unbreakable but sadly, the brothers quickly became enemies. Halfdan was brutally killed by King Harald in season five but why? Express.co.uk has everything you need to know.