Vikings' seemingly untouchable character, the Seer, was killed in season 5 – but why did the creator of the series decide to kill him?

Ivar the Boneless has to be one of the most intense and villainous characters History Channel's Vikings has ever seen. He's someone who stands out even among all the other bloodthirsty Vikings on the show. But the problems with Ivar's character largely stems from the fact that he's someone we maybe don't love to dislike, per say. In truth, Ivar has evolved into someone we just dislike, period. His actions, childish behavior, and general demeanor combine to produce an antagonist who seems almost like a caricature. He's almost too evil, past the point of believability and any form of empathy. We might have sympathized with him for his disability and less than desirable childhood, but by the end of season 6, Ivar has found a way to make us forget even that.