Seven Sisters (Forgotten Realms)
The Seven Sisters—fictional characters of the "Forgotten Realms" campaign setting of the "Dungeons & Dragons" Role Playing Game. The sisters are epic level characters (characters possessing nearly super-human levels of skill and power) of differing abilities, most of which involve some form of spellcasting and use of magic. Created by Ed Greenwood, they have been featured in multiple novels, games, and officially created scenarios by an equally large number of authors/game-designers.
Fantasy world
"Dungeons & Dragons", the first major role-playing game, has created several detailed and commercially successful fantasy worlds (called "campaign settings"), with established characters, locations, histories, and sociologies. The Forgotten Realms is perhaps the most extensively developed of these worlds. These elements of detail can be a large part of what attracts people to RPGs.