The stage crew.  I remember one time we were all working in the gym, and I kept complaining that the crew and I were starving.   Pinky, who was then responsible for feeding us, got fed up with me. She stormed downstairs to inform Dr. Yu about my griping.  I thought I was in big trouble.  To my pleasant surprise, instead of telling me to report to the office and dressing me down, Dr. Yu ordered fried chickens from Savory Restaurant, and sent them upstairs for our lunch.  =D