<P> The show portrays Ragnar as a former farmer who rises to fame by successful raids into England, and eventually becomes king of Denmark, with the support of his family and fellow warriors: his brother Rollo, his son Bjorn Ironside, and his wives--the shieldmaiden Lagertha and the princess Aslaug . </P> <P> The following is a list of series regulars who have appeared in one or more of the series's five seasons . The characters are listed in the order they were first credited in the series . </P> <Table> <Tr> <Th> Character </Th> <Th> Actor </Th> <Th_colspan="7"> Seasons </Th> </Tr> <Tr> <Th> </Th> <Th> </Th> <Th> </Th> <Th_colspan="2"> </Th> <Th_colspan="2"> 5 </Th> </Tr> <Tr> <Th> Part 1 </Th> <Th> Part 2 </Th> <Th> Part 1 </Th> <Th> Part 2 </Th> </Tr> <Tr> <Td> Ragnar Lothbrok </Td> <Td> Travis Fimmel </Td> <Td_colspan="5"> Main </Td> <Td_colspan="2"> Does not appear </Td> </Tr> <Tr> <Td> Lagertha </Td> <Td> Katheryn Winnick </Td> <Td_colspan="7"> Main </Td> </Tr> <Tr> <Td> Rollo </Td> <Td> Clive Standen </Td> <Td_colspan="5"> Main </Td> <Td> Guest </Td> <Td> TBA </Td> </Tr> <Tr> <Td> Siggy </Td> <Td> Jessalyn Gilsig </Td> <Td_colspan="3"> Main </Td> <Td_colspan="4"> Does not appear </Td> </Tr> <Tr> <Td> Floki </Td> <Td> Gustaf Skarsgård </Td> <Td_colspan="7"> Main </Td> </Tr> <Tr> <Td> Athelstan </Td> <Td> George Blagden </Td> <Td_colspan="3"> Main </Td> <Td> Recurring </Td> <Td> Guest </Td> <Td> Body double Voice </Td> <Td> Does not appear </Td> </Tr> <Tr> <Td> Earl Haraldson </Td> <Td> Gabriel Byrne </Td> <Td> Main </Td> <Td_colspan="6"> Does not appear </Td> </Tr> <Tr> <Td> Aslaug </Td> <Td> Alyssa Sutherland </Td> <Td_colspan="5"> Main </Td> <Td_colspan="2"> </Td> </Tr> <Tr> <Td> King Horik </Td> <Td> Donal Logue </Td> <Td_colspan="2"> Main </Td> <Td_colspan="5"> Does not appear </Td> </Tr> <Tr> <Td> Bjorn Ironside </Td> <Td> Alexander Ludwig </Td> <Td> Recurring </Td> <Td_colspan="6"> Main </Td> </Tr> <Tr> <Td> King Ecbert </Td> <Td> Linus Roache </Td> <Td> Does not appear </Td> <Td_colspan="4"> Main </Td> <Td> Body double </Td> <Td> Does not appear </Td> </Tr> <Tr> <Td> Kalf </Td> <Td> Ben Robson </Td> <Td_colspan="2"> Does not appear </Td> <Td_colspan="2"> Main </Td> <Td_colspan="3"> Does not appear </Td> </Tr> <Tr> <Td> Harbard </Td> <Td> Kevin Durand </Td> <Td_colspan="2"> Does not appear </Td> <Td_colspan="2"> Main </Td> <Td_colspan="2"> Does not appear </Td> <Td> TBA </Td> </Tr> <Tr> <Td> Charles </Td> <Td> Lothaire Bluteau </Td> <Td_colspan="2"> Does not appear </Td> <Td_colspan="2"> Main </Td> <Td_colspan="2"> Does not appear </Td> <Td> TBA </Td> </Tr> <Tr> <Td> The Seer </Td> <Td> John Kavanagh </Td> <Td_colspan="3"> Recurring </Td> <Td_colspan="4"> Main </Td> </Tr> <Tr> <Td> Pope Leo IV </Td> <Td_colspan="3"> Does not appear </Td> <Td> Guest </Td> <Td_colspan="2"> Does not appear </Td> <Td> TBA </Td> </Tr> <Tr> <Td> Harald Finehair </Td> <Td> Peter Franzén </Td> <Td_colspan="3"> Does not appear </Td> <Td_colspan="4"> Main </Td> </Tr> <Tr> <Td> Halfdan the Black </Td> <Td> Jasper Pääkkönen </Td> <Td_colspan="3"> Does not appear </Td> <Td_colspan="3"> Main </Td> <Td> Does not appear </Td> </Tr> <Tr> <Td> Aethelwulf </Td> <Td> Moe Dunford </Td> <Td> Does not appear </Td> <Td_colspan="3"> Recurring </Td> <Td_colspan="2"> Main </Td> <Td> Does not appear </Td> </Tr> <Tr> <Td> Ivar the Boneless </Td> <Td> Alex Høgh </Td> <Td> Does not appear </Td> <Td_colspan="3"> Recurring </Td> <Td_colspan="3"> Main </Td> </Tr> <Tr> <Td> Hvitserk </Td> <Td> Marco Ilsø </Td> <Td> Does not appear </Td> <Td_colspan="3"> Recurring </Td> <Td_colspan="3"> Main </Td> </Tr> <Tr> <Td> Sigurd Snake - in - the - Eye </Td> <Td> David Lindström </Td> <Td> Does not appear </Td> <Td_colspan="3"> Recurring </Td> <Td> Main </Td> <Td> Body double </Td> <Td> Does not appear </Td> </Tr> <Tr> <Td> Ubbe </Td> <Td> Jordan Patrick Smith </Td> <Td> Does not appear </Td> <Td_colspan="3"> Recurring </Td> <Td_colspan="3"> Main </Td> </Tr> <Tr> <Td> Bishop Heahmund </Td> <Td> Jonathan Rhys Meyers </Td> <Td_colspan="4"> Does not appear </Td> <Td_colspan="3"> Main </Td> </Tr> </Table> <Tr> <Th> Character </Th> <Th> Actor </Th> <Th_colspan="7"> Seasons </Th> </Tr>

Who plays the king in vikings season 1
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