Watterson was not the first or even the best at "breaking the borders '.. The artists who produced the old EC comics "The Crypt Keeper" and "The Vault of Horror" were some real geniuses at that. When I was a little kid of a bout 5 or 6 my cousin had an entire collection of Crypt keeper comics and I remember reading them and getting the living **** scared out of me.
I distinctly remember one where a guy , who couldnt die, was stranded in the desert and was being eaten alive by buzzards. There was another one called "HEAP" which was about this pile of rubbish that just came alive and started on a rampage of fetidididdity.
They dont make comics like that any more.
I assume he does the graphic novels?
The characters I am speaking of were treated in a realistic, very graphic manner, except for the duck addition.
My brother once tried to sell a comic that went about like the old gangster movies, except the characters were ducks. Imagine Edward G Robinson as a duck, and you have it. Never found a taker.