Editing Role-playing game (section)

===Non-player character===
{{main|Non-player character}}
In contrast to player characters, non-player characters (NPCs) are controlled by the gamemaster or game engine, or by people assisting the gamemaster. Non-player characters fill out the population of the fictional setting and can act as antagonists, bystanders, or allies of the player characters.<ref>(Tychsen et al. 2005:216) "The environment needs to be filled out with non-player controlled characters (NPCs)</ref>