“When the plumbing gets tough, the tough get plumbing”
A Plumber is an occupation that exists in both the Earth and the Mushroom World. A plumber's job is to install and maintain piping and apparatuses connected with water transport and drainage systems, which occasionally includes work such as unclogging drains.
When the explorer Marco Polo went to China, he and his crew brought back many discoveries to Europe. One of these was the art of plumbing. Marco Polo's Plumbers learned plumbing in China and later introduced it to the city of Venice. Plumbing later spread through Europe and sewer systems became essential for modern towns throughout the world.
Hundreds of years later, the famous plumber Salvador Drainado founded the Brooklyn Plumbers Academy to spread plumbing to a younger generation. In the tv and other media many plumbers, including Mario and Luigi in the cartoons became plumbers here under the strict teachings of Sergeant Kooperman. Mario and Luigi became renowned for their abilities when they saved the president of the United States of America from a sewer flood. The president gave Mario the Golden Plumber's Helper and Luigi the Golden Wrench as thanks. The brothers later founded the Mario Brothers Plumbing business, where they continued their jobs, and received the Plumbers of the Year award by the Imperial Poobah of the Grand Order of Plumbers.