A term sometimes used by the media tabloids to incorrectly describe the Exterminators.

Berserkers (or berserks) were Norse warriors from Earth who are reported in the Old Norse literature to have fought in a nearly uncontrollable, trance-like fury, a characteristic which later gave rise to the English word berserk.

Berserkers are attested in numerous Old Norse sources. Most historians believe that berserkers worked themselves into a rage before battle, but some think that they might have consumed drugged foods.