Apparently, all this Viking Horde wearing animal skins and horned helmets is a invention of the media over the last century and a half...........I bet pirates didn’t look like Johnny Depp, and cavemen didn’t look like Ringo Starr, either.......
Probably.
But wearing horns and intimidating paraphenalia to awe your enemy is an old ploy. In the Middle Ages Knights DID wearn horned helmets and helmets with elaborate crests. So did the Samuri. In the 1700’s grenadiers wore large bearskin hats to make themselves look even bigger. Even the Ancient Greeks and Romans wore elaborate crests at times.