User blog comment:Tiger Lily29/What do you want to see next on Gravity Falls?/@comment-8792734-20120821224901

How about these:

Blob: In an episode called De Good, De Bad, and De Blob!, a mysterious blob could start turning people blue/whatever color the blob is and the people would turn evil and head for Dipper and Mabel because the Blob for some reason wants Waddles.

Frankenorthwest: In an episode called ''IT'S ALIVE!!! And Pretty, Too!, a Halloween episode, Pacifica would try to scare Mabel into getting her Waddles after Blendin Blandin tells Pacifica what happened in The Time Travler's Pig'' after the giant floating baby head finds out about the twins and will release him if Pacifica gets Waddles at the fair.