Sideshow Blob!

Sideshow Blob! is a Bart Simpson's Treehouse of Horror story featured in.

Synopsis
Sideshow Bob turns into a giant blob and plans to devour Bart, consuming a number of people along the way...

Plot
Sideshow Bob volunteers for a prison experiment in which he ends up being transformed into a giant cannibalistic blob. He breaks out of prison and goes on the rampage; Bart tricks him into killing Jimbo and Nelson, and he then goes after Selma, Professor Frink, Reverend Lovejoy and Krusty. Bart and Lisa try to warn the adults, but they are ignored. They then head to warn Apu, only to find out Bob is already inside the Kwik-E-Mart devouring him. Whilst trying to figure out Bob's weakness, they discover that he is vulnerable against cold, and Bart then sucks him into the Squishee Machine. However, it is shown that Bob becomes water and escapes, ending up inside Mt. Splashmore.