An excerpt from
Ben Zero (1): Cloudclipper by Peter Berridge: 'After his nap, the computer announces that Ben must now take part in sword fighting practice. He is forcibly ushered by the robot into the “exercise room.” It runs off the corridor almost directly opposite his bedroom/living room. Ben says he does not want to do sword fighting and stands with his arms folded. He is given a painful electric shock by FIDO. CLEO warns him that if he persists in refusing to take part in “proscribed activities” shocks will be increasingly severe until they become fatal! Ben is now given a sword by FIDO. The computer tells Ben the sword is called Sting.'