Dr. Freezegood

Dr. Freezegood are snowmen wearing fezz hats, and are found in Super Mario World 2: Yoshi's Island. They ride ski lifts in World 5 and stand completly still unless they drop off on a slope. You cannot eat them, but you can step on their heads to rack up a few coins. They're harmless to touch, but they do hog up the ski lift platforms, which can become a bit of a nuisance.