Jupiter is the main fire engine of the Pontypandy Fire Station, driven to emergencies mostly by Fireman Sam, although the other firefighters have also driven it throughout the series. The pride of the Pontypandy Fire Service, Jupiter is always on hand to attend all manner of disasters. Expertly driven by Sam and the crew, Jupiter is a welcome sight to anyone in trouble. Always clean and shiny, Jupiter's bright red paintwork and flashing blue lights are a clear sight that help is on the way.