My younger son pointed out that we needed some bad guys for our web comic. He invented an evil, dark, non melting snowman. I proposed that he should be made of the dirty snow that remains when a huge pile of snow melts in the city. I suppose that means he is mostly made of soot and car exhaust.
Below is my son's far superior version of this fellow, drawn on the Number 2 train at 7:40 am..