Harold Grenold is an unseen wellie and owner of electricity company Grenold Electric. He is mentioned in a note written by Victoria Byng dated February 13th, 1956 in We All Fall Down DLC. She wrote to him regarding the Galvanic Disciplinary Device or "Spanker" as the workers cheekily call it. Making it firmly clear that she wants the voltage adjusted accordingly and not be used to amuse or tickle others.
- Harold did not end up adjusting the voltage to the Spankers. This ties into the main game timeline resulting where many wellies have developed a spanking/shocking fetish from this.