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Vikings - Season 4 - 3 New Regulars Cast

Following its deadly third season, History's Vikings is adding three new series regulars to its cast.

Peter Franzen (Bad Boys),Jasper Paakkonen (Frozen Land, Secret Lives) and Dianne Doan (Once Upon a Time) have boarded the drama series created by Michael Hirst, The Hollywood Reporter has learned.

Franzen will play King Harald Finehair, a Scandinavian warrior and potential threat to Ragnar (Travis Fimmel). Paakkonen is set to play Halfdan the Black, Finehair's younger brother. Doan will portray Yidu, a new and unique Chinese character who will have a big role in season four.