Bill Cipher's downfall

It's the endgame and the initial plan to stop the evil dimensional being, Bill Cipher, has failed with only Dipper, Mabel, Stan, and Ford left standing against him. Bill looks to have won, but some last minute thinking ultimately ruins his plans and, in the end, even a godlike being can be backed into a corner and left begging for mercy.

Example of:
Villainous Breakdown