We posting about dreams now?
Last night I had a dream that a bunch of the characters finally confront Gaster and he traps them in these deadly Saw-like contraptions.
Alphys yells "Why are you doing this!?" and Gaster reveals that one time Kris wrote a vent-letter about all the adults they hate and wanted to get revenge on. Then they crumpled up the letter and threw it in the lake(since it was never intended to be read by anyone). But Gaster found it and took it as instructions on how to torture all the Hometown residents.