Travis Fimmel (The Beast, Baytown Outlaws) and Jessalyn Gilsig (Glee, Heroes, CSI: NY) are among the new cast members announced today for History’s upcoming scripted series VikingsFimmel will play the role of Viking leader Ragnar; Gilsig has been tapped for the role of Siggy, the wife of Earl Haraldson played by the previously announced Gabriel Byrne. Also announced today: Gustaf Skarsgard (The Way Back) as Floki, Clive Standen (Camelot, Robin Hood) as Rollo, and Katheryn Winnick (Stand Up Guys) as Lagertha. The previously announced George Blagden will play the role of Athelstan, an Anglo-Saxon monk captured by Ragnar on his first raid on England. Vikings follows the adventures of Ragnar Lothbrok, his band of Viking brothers and his family as he rises to become King of the Viking tribes. Johan Renck and Ken Girotti are slated to direct multiple episodes of the series, which premieres next year.

Related: Gabriel Byrne Cast In History’s ‘Vikings’