10,000 (Year)

10,000 AD is a very important year in Plumber Who. It can first be seen written on a paper in an episode lying on the countertop of the T.O.I.L.E.T.. The paper is labelled "Important Dates", with text reading that 10,000 is very dangerous, and nobody should ever go there.

It appears again in the episode "A Crinkle in Time", when Carl mentions that he wants to go to the year 10,000. The Plumber said that that year was a worse place to go than 1774, and by going to 1774 you can die within minutes, meaning 10,000 is a very major year.

In the episode "Ryan", the Plumber goes to the year 10,000 to 'run some errands', which turns out is actually stopping the apocalypse, which is another reference to the year 10,000, with multiple papers reading "THE END IS NEAR" on them. We all know that the end isn't really near, as the Plumber and Will go to 2030, which is 14 years from 2016, the present. To read more about the "THE END IS NEAR" papers, go to the wiki page labelled "Foreshadowing", under the appropriate paragraph.

In the episode "Sleep Paralysis", a sticky-note can be seen with the number 10,000 written on it, with a warning sign under it.

The original plot for this year was going to be the setting of the season 2 finale, however, it was cancelled. It is not confirmed if 10,000 will have a more major role later in the series or if the idea of this is cancelled.