One of the most interesting spoilers that have come out regarding History's "Vikings" season 4 is Rollo's makeover that will transform him from a rough-looking Viking warrior and into a regal Frankish ruler.

The makeover, which will happen in episode 2 of season 4, will make him almost unrecognizable. He will trade his long, dark locks for a full-bodied bob and replace his warrior get up with exquisite Parisian garb fit for royalty.

Despite looking every bit the part of a Frankish ruler, Rollo, played by Clive Standen, knows he is not one. In fact, his wife, Gisla (Morgane Polanski) will be the first one to remind him of that fact.

A teaser video of the episode titled "Kill the Queen" shows Gisla suddenly bursting into laughter after she saw her husband in his new appearance.

Standen said that viewers will see a very different Rollo in season 4. He further added, "If he's ever going to conquer Paris and conquer the princess, he needs to be more cerebral."

Meanwhile, according to several spoilers and other reports, Ragnar (Travis Fimmel) will go back home in Kattegat in season 4 of "Vikings." The spoilers also hint that Ragnar will be very sick after the battle in Paris, causing Queen Aslaug (Alyssa Sutherland) and other successors vie for the throne.

It is also announced that instead of the History's original plan to air only 16 episodes, "Vikings" season 4 will have 20 episodes and will start where episode 3 left off.

Moreover, the first 10 episodes will be shown for 10 straight weeks. There will then be a short break before the last 10 episodes will be shown.

The other cast of "Vikings" season 4 include Katheryn Winnick as Lagertha, Gustaf Skarsgard as Floki, Alexander Ludwig as Bjorn, Ben Robson as Earl Kalf, Kevin Durand as Harbard, Lothaire Bluteau as King Charles, and Linus Roache as King Ecbert.