There are a lot more people in the D+X world than there are players or player-operated characters. From supervisory level personnel and professionals in the office to the facilities maintenance people to Security to bartenders and chefs. Additionally, there are outside people like those associated with the 'girls' who've been sent to The D+X Institute, their significant others, roommates, former business partners, etc.
Some of these may warrant the creation of a full character. This would depend on whether they are going to interact regularly/significantly within the game world and whether they will interact apart from the character they're most associated with. For example, the ex-girlfriend that sends someone to us and drops by a time or two to check on progress and taunt doesn't really need to be a separate character. But the former business partner who sends someone here and sticks around to interact with management and other girls may work better as a full additional character.
Just like full player-characters, NPCs 'belong' to their controlling players and actions/speech shouldn't be attributed to them by others without some kind of arrangement/permission with the 'owner'. Note that D+X employees belong to, and would be controlled by, management. But, because getting permission for any and every possible encounter beforehand is rather impractical, we'll let them be used, but with some limitations. There are 'limitations' because we do reserve the right to say that our character wouldn't act as was written (our bartenders may make a girl's drink strong, but they won't drug it without orders to do so from those authorized to give such orders; our Security people might fondle, pinch, and grope, but they won't brutalize). This makes a lot of sense in that these people know quite well the price they'd pay for misusing our 'merchandise'.
