When a player does not have a player character of his or her own in some games and in some circumstance, the player is able to temporarily take an NPC under control. For that there are different reasons but that often stem from the player because he does not maintain a PC within the group and play the NPC for a session or from the player’s PC being unable to act for some time-For example, they are injured or in another location at that time. Although game masters design and normally control these characters, they still are offered the opportunity to temporarily control these non-player characters since they are able to know more about the plot of the game. This is promoted in some systems such as Nobilis.