In the theme of my more recent comics I've been thinking about time travel. Have you ever noticed how whenever people time travel in books/films/ect there's always some side effect?
The Butterfly Effect: Go insane, almost destroy your brain from memory overload.
The Time Machine: End up stuck in future with cannibal evolved humans.
Doctor Who: Have to travel through time with bad production values.
Back to the Future: Eventually you get parkinsons.
Also I should mention that Part 3 of Hat guy's adventure had to be shrunk to fit the size limits so it's not great quality.