As Ragnar Lothbrock (Travis Fimmel) challenges his sons to overthrow him as the King of Denmark, his wives will also be in the middle of a dramatic fight when "Vikings" returns for the second half of season 4.

During the 2016 San Diego Comic Con, actress Katheryn Winnick revealed that her character Lagertha and Alyssa Sutherland's Aslaug will have an intense fight.

"It's going to be a cat fight. The two power women go head to head," Winnick stated during the panel as reported by Entertainment Weekly. "It's a really interesting scene because you don't expect what happens."

Will the said fight cause the demise of Aslaug before the end of season 4? The amount of blood seen from her body in one of the trailers shown in the 2016 SDCC appears to be alluding to it.

Meanwhile, Alexander Ludwig revealed that his character Bjorn Ironside and Gustaf Skarsgård's Floki will have a different journey when the series returns this fall.

"Floki and Bjorn end up going to the Mediterranean, and they work on their tans a little bit," the actor stated. "You're definitely going to see Floki and Bjorn's relationship flourish."

While the second part of "Vikings" season 4 has yet to premiere, Deadline reported that the history drama series already cast former WWE Star Adam Copeland for a recurring role for the fifth season of the series.

Copeland, better known as Edge in the professional wrestling industry, will play the role of a brave and fierce warrior named Ketill Flatnose. He will be appointed by Floki as one of the Viking leaders who will go on an expedition to Iceland to set up a new community.

"The Tudors" star Jonathan Rhys Meyers is also revealed to be a new cast member for "Vikings" season 5.

History Channel has yet to announce the premiere date of the second half of "Vikings" season 4.