Calvin, like most other children his age, enjoys making snowmen during the winter. Unlike most other children, Calvin's snowmen are almost never a simple figure of a person.
The Borgeois Buffoon was a strange snowman that Calvin asked his mom for a grant application to make them. It was denied, and they all melted.
A huge snowman with a big mouth. Calvin placed himself in its mouth to create the impression he was being eaten alive.
Many of these were made by Calvin, and he crushed them all, pretending to be a Tyrannosaurus. Calvin made more two years later, fleeing from a snow T-rex. They were also used once when Calvin made one commit suicide by jumping from his bedroom window.
Calvin made several snowmen heads and placed them on poles, mouths agape.
Easter Island heads
Calvin made several large snowmen heads that resembled Easter Island statues. When his dad came along, Calvin said, "What's wrong with Easter Island? I like Easter Island!"
Anatomically correct snowman
After seeing Susie make a snowwoman, Calvin made a snowman with ALL parts of the body, but his mom stopped him.
Snowman House of Horror
Calvin created several depictions of snowmen in his "Snowman House of Horror." Among the snowmen created, a specific snowman had been chopped in half with a sled driven by a baby snowman.
Automobile accident snowmen
This single-panel gag involved Dad's parked car. Several snowmen were seen gaping in horror at the decapitated body of a snowman "hit" by the car. Dad's response: "We've got to get that kid to a psychiatrist."
The hill snowman
A giant snowman is peeking over the edge of a hill. Only the top of the head and "fingers" grasping the hill can be seen, but that's enough to freak out Dad.
Deranged mutant killer monster snow goons
This series began as an attempt by Calvin to bestow life on a snowman by invoking the "great and terrible snow demons." The attempt goes horribly wrong and instead of the snowman slave or "snow goon" he set out to create, the result was a growling, lurching monstrosity which Calvin described to Hobbes as a "deranged mutant killer monster snow goon" who went on to create others of his kind; at least one had two heads. The snow goons "follow" Calvin to his house and one is seen "looking" inside the window not from Calvin's perspective but a regular perspective, that of an ordinary snowman with a carrot nose.
The phrase was used as the basis of the title of the Attack of the Deranged Mutant Killer Monster Snow Goons compilation.
Like the man-eating snowman, Calvin made the same impression, except instead of a giant snowman, he made a snake.