Originally Posted by
Slipperychicken
It's not about the characters engaging in "dungeon-crawling murder-fests", it's about such activities being the beginning and end of the character. As in: no family, no goals (beside loot, murder, and sometimes power for their own sake), no life, no interests, no hobbies or even preferences beside those which improve game-statistics, will not even consider any activity perceived to be detrimental to murdering (drinking the cheapest ale possible is a common exception to justify these characters hanging around bars for quests). The murderhobo is simply an angry statblock, given the bare minimum of fluff or backstory which his player can get away with.