Shoulder angels are powerful entities that watch over the lives of heroes for entertainment. If they are pleased by what they see, they can grant those heroes boons to aid them in their quests. If they are displeased, then they may punish the unwitting heroes. The shape and scope of their response to the heroes’ actions is limited only by their imagination.
Different shoulder angels find different things entertaining. One might punish a hero for taking an action that another applauds. As heroes adventure, they learn what their shoulder angels find entertaining or offensive and can choose to pander to their desires in return for the benefits of pleasing them. While they are generally consistent in their preferences, many heroes have been surprised by the unexpected reactions of a shoulder angel’s whimsical moods.