I don't know where the whole "Viking" thing came from. There was nothing about that clown that suggested "Viking" except what may or may not be a Thor's hammer tattoo in his torso. That stupid hat he was wearing was definitely NOT "Viking".
I suspect it was started by some stupid reporter who knows no more about Vikings than he does String Theory.
Of topic, but another thing that annoys me is people who describe this as a "Mohawk".
The Mohawk did not traditionally cut their hair like that. That is a traditional Pawnee cut.