"I would say there are three major misconceptions. Firstly, Vikings did not have horns on their helmets. In fact we don’t really know much about what the Viking helmets looked like because they’ve only found three as far as I know. They were probably hand-made and there were probably different versions but none of the depictions from the time have them wearing horns. That’s a turn of the 19th century thing.
"The second misconception is that they were murderous, plundering hordes. They did do that, but probably not more than other people of the time did when they went to war. They just had different tactics and were very good at fighting. And of course, the travels and the battles and the bloodshed are the parts that really work well in metal lyrics.
"The third thing people think of with Vikings is that they’re dirty, smelly brutes. But Vikings were actually known for keeping very good hygiene. And they would wash at least once a week."