Vikings' Rollo and Ragnar will be at each other's throats once more in season 4.

'Vikings' Season 4: High Seas Battles & Intense Stunts, Clive Standen Rings In Golden Age

The Lothbrok brothers have had a fairly contentious history, one which Rollo (Clive Standen) spelled out quite clearly when speaking to his siblings (not) dead body. Between that casket confession and Rollo's decision to stay behind in Paris, the stage is set for yet another family feud. Bring out Steve Harvey.

"We carry on straight from what we did last year, " Travis Fimmel (Ragnar) explained to IGN at San Diego Comic-Con. "Ragnar is still very sick; we don't know if he's going to die or not, and Rollo is the old turncoat. We're going to have it out if I survive."

'Vikings' TV Show: A 'Completely Different Rollo' To Appear, Clive Standen Teases Paris Chaos

Standen for his part tried to shed a positive light on his character's blatant treachery.

"The real question is going to be is Rollo really going to betray his brother, or is thins going to be another route to get into Paris again?" Standen teased, adding that the first mountain Rollo has to climb is to break the language barrier and get the French on board with his schemes.

Find out if the brother's will shed each other's blood when Vikings return to the History Channel for a super-sized season this spring.