From the Super Mario Wiki
The title of this article is conjectural; an official name for the article's subject has not been found, so it has been given a fitting title by editors. If an official name appears, it is requested that the article be moved to the correct name.
The Mushroom Kingdom Fire Department
, extinguishing several Fire Flowers.
The Mushroom Kingdom Fire Department is, as their name would imply, the local fire department of the Mushroom Kingdom. All members of the crew appear to be Mushroom People.
The fire department appeared once in The Adventures of Super Mario Bros. 3 episode "Reign Storm". In the episode, Kooky von Koopa's Robot Princess had ordered the fire department to extinguish every Fire Flower in the Mushroom Kingdom. Unaware that the Robot Princess was a fake, the fire department was seen soaking a group of Fire Flowers, assumedly killing them. This event was unusual, since Fire Flowers can survive being underwater in many games.