Vikings: 8 Most Insane Fan Theories
2. Hvitserk Was Behind Everything!
It is safe to say that if this theory is correct, things didn't end up going to plan for Hvitserk. Before his tragic loss of sanity, one of the biggest theories in the world of Vikings revolved around the idea that Hvitserk had some hidden talents that fans weren't seeing.
During season five, this less appreciated son of Ragnar chose to jump ship - literally - and align himself with Ivar, to break out on his own and get away from his brother's shadow. This ended up causing him an existential crisis, as he questioned whether his decision was correct but followed Ivar's rule regardless.
However, many fans theorised that Hvisterk's visible confusion and conflict was a ruse, and that he was secretly plotting the whole thing, helping Ivar to become King, but secretly preparing to strike and take the crown for himself afterwards.
This also implies that he deliberately switched allegiances to insight some ferocity from Ubbe to make his battles against Ivar all the more personal, to garner Hvitserk the best outcome.
Of course, everything that happened to the poor man in season six seems to blow this theory out of the water. However, it's still a tremendous hypothetical to think that Hvisterk was secretly the smartest member of the Lothbrok family all along.