Berserker

Berserker is a reputation title in Fallout and Fallout 2.

Obtaining
You get this title by killing many good karma people and having bad or very bad karma.

Effects
Theoretically, bad characters have a better reaction in dialogue. However, no critters are actually flagged as evil in the game, meaning the only effect the Berserker reputation has are unique dialogue options and reactions from NPCs. NPC reaction may be initially lower to Berserkers.