1. A member of a group of Norse warriors who fought with wild unrestrained agrgression.
2. One of a band of ancient Norse warriors legendary for their savagery and reckless frenzy in battle.
3. One of the ancient Norse warriors legendary for working themselves into a frenzy before a battle and fighting with reckless savagery and insane fury.

Old Berserker (Bear Skin) was a famous character in Norse mythology who was a supernatural warrior who fought with great fury and feared nothing. It is said that he even fought without weapons or armor and rushed into battle “protected” only by the bear skin thrown over his shoulder and clawing and biting his victims to death.

Examples of modern berserkers minus the bear skins

Based on this myth, any fierce figher was soon called a berserker; especially one who fought with a fury that seemed almost insane and terrified even his allies. In time, to go berserk came to mean the violent, furious rage of a madman.

Back in 1995, there was an article about three young men, sixteen, seventeen, and eighteen years of age; two of whom were arrested for killing their parents.

The brothers are charged with three counts each of homicide and conspiracy to commit homicide in the slayings of their parents and their younger brother.

Police say the brothers had threatened for years to kill their parents as revenge for trying to impose their strict way of life as Jehovah’s Witnesses on the boys.

The three, two brothers and a cousin, all had shaven heads and tattoos. One had “Sieg Heil!” tattooed above his eyebrows, while two of them had “Berserker” tattooed on their foreheads; an apparent reference to Norse folk stories about warriors so fierce they needed no armor.