Is Floki (Gustaf Skarsgård) fraternizing with the enemy? In a sneak-peek video for episode 5 of History Channel’s “Vikings,” viewers can see Ragnar’s former right hand man clinking horns with the king’s newest foes.

Ragnar’s Season 4 enemies made their way to Kattegat in episode 4 of the epic historical drama. According to the newcomer King Harald Finehair (Peter Franzén), he made the trek to Kattegat to meet the infamous Ragnar … and more importantly, take him down.

King Harald revealed to Queen Aslaug (Jessica Sutherland) he wanted to prove to a princess he was pursuing that he is worthy of becoming her husband. But in order to do that, he would need to become king of all Norway. “Then she would have to marry me for sure,” he added.

“But in order to become king of all Norway you would have to overthrow my husband,” Aslaug contested.

And it looks like that’s exactly what King Harald plans to do. But in order to take down the powerful Viking, he’ll need some help — and it appears that King Harald is seeking aid from Ragnar’s former confidant, Floki. During a celebration, Harald and his younger brother Halfdan (Jasper Pääkönen) invite Floki and Helga (Maude Hirst) to join them for a drink. Aslaug looks on as the four mingle over ale.

“You are the genius that built the boats that changed our world and help make Ragnar so famous,” Halfdan says, flattering both Floki and Helga. “Why would he fall out with someone like you?”

“Because I killed his pet Christian,” Floki responds only to have his wife reprimand his bluntness. Doesn’t Floki remember it wasn’t long ago that he was enduring water torture for the murderous crime of Athelstan (George Blagden)? What would urge Floki to speak so freely of the controversial event?

But Harald and Halfdan don’t seem alarmed that they’re raising a glass with a Christian killer. In fact, they look intrigued by Floki’s admission. Is it possible this could be the beginning of a beautiful and bloody friendship?

During an interview with IGN, Michael Hirst, creator of "Vikings," dished that Harald and Halfdan have "no conscience or sensitivity" when it comes to people of other religions or faiths, which is why they're interested in Floki — someone who shares the same mindset.

"They are a real threat. What it's like is like throwing into the mix people who are unpredictable but who you know in the longterm want to kill you," the showrunner explained. "So that's what you have as an ongoing concern, an ongoing drama. And they are great. These two characters are fantastic."

“Vikings” airs Thursdays at 10 p.m. EDT on the History Channel.