He may be spoken to to learn more about the system and which minigame is currently spotlighted, and also runs the reward shop for the system, known as Stanley Limelight Traders, which sells different rewards from a variety of minigames. His location varies depending on the minigame currently spotlighted. Regardless of which minigame is currently spotlighted, his shop may be still be accessed from the podium at any minigame that's part of the system, although Stanley himself will not appear.