Today, the word ‘berserk’ is used to describe anyone in an irrational, agitated state of mind who cannot or does not control his or her actions. The meaning of the word originates with the Viking berserkers, the fierce warriors who were known for battling in an uncontrollable, trance-like fury, and were alleged to be able to perform seemingly impossible super-human feats of strength. They would howl and growl like beasts, froth at the mouth, and launch an attack in a fit of frenzy.
Unruly Warrior Gang
In medieval Norse and Germanic history and folklore, the berserkers were described as members of an unruly warrior gang that worshipped Odin, the supreme Norse deity, and were commissioned to royal and noble courts as bodyguards and ‘shock troops’, who would strike fear into all who encountered them. Adding to their ferocity, and in order to intimidate the enemy, they would wear bear and wolf pelts when they fought, giving them the name Berserker, meaning “bear coat” in Old Norse.
It is proposed by some historians that by wearing the pelts, the warriors believed they could extract the power and strength from the animal.
The Torslunda helmet: Odin followed by a berserker (public domain)