Crud

Crud is an evil slime monster appearing in The New Adventures of Winnie the Pooh episode Cleanliness is Next to Impossible. He is voiced by Jim Cummings.

Personality
Despite being a Winnie the Pooh character, Crud is dark and malevolent. He intends to make the world more dirty by spreading his dirt and grime everywhere with his reverse vacuum, and hates the words "clean" and "wash", as he is repulsed by the idea of cleaning up.

History
Crud is an evil slime monster living under Christopher Robin's bed, presumably created from all the dirt and grime from Christopher Robin not cleaning his room or vacuuming under the bed. When he and his friends threw things under the bed, Crud was able to transform it into a world and kingdom of its own. Pooh and Piglet went through first and were captured and imprisoned by Christopher Robin's crayons, turned into Crud's guards. Later Crud's minion, Smudge, led Christopher Robin and Tigger to Crud, who told Christopher Robin that his kingdom was created because of him throwing things under the bed. When Christopher Robin said he should clean up under the bed, Crud became enraged. He forced Christopher Robin's toys to pour slime into his "un-vacuum", a reverse vacuum cleaner designed to spread dirt and grime all over the world. Crud told Christopher Robin to help him with this, under a threat to presumably kill his friends, but he refused, so Crud had him imprisoned. However, he and the others escaped, before Crud confronted them again. Christopher Robin exposed Crud to a bar of soap, weakening him, and then the toys modified the reverse vacuum into an actual vacuum cleaner. Together they and Tigger sucked Crud and Smudge into the vacuum, thus "cleaning them up" and erasing them from under the bed.

To prevent the creation of another monster like Crud, Christopher Robin promised to always clean his room afterwards.