He is a robot that takes care of the facility,he explains everything to the new.Now, in the future, instead of progressing, humans decided to make a facility to experience every pleasure capable of being transmited into you brain injecting all Chemicals that make humans feel pleasure simultaneously in your body.All while you sit In a safe room.We will keep you artificially alive and Healty until the sun burns out.And They will put a headset  that injects all the chemicals directly to your brain.