Joe Penhal, is a police officer in portwhenn, in series 1 when he was first arrived, was diagnosed with narcolepsy by Dr.elligham. In series 3 it is shown that Joe Penhale doesn't want to lose his job because of his condition, Dr. Elligham says that if he's able to control the time when he goes unconscious, he could carry on in till then it would best if he went to see a specialist.