The Mechanical Time Decelerator is one of Dexter's many inventions, that only appears in the episode "Chubby Cheese". In the episode, the Time Decelerator was invented on the spot by Dexter to slow down the Whack-A-Weasel game, so he can win more tickets. The Time Decelerator is seen by the evil organization that runs Chubby Cheeses, and the Captain of the organization attempts to recruit Dexter to join the organization so that he can invent for them.