The snowman in the Snow Land poor, but if you give him 500 Coins, hes a rich guy and also a jerk, plus he doesn't give you anything, only give money to him if you want the in-game achievement.
"Should i stop beating up that fat guy in the red mask?" said officer Bob. "Nah keep killin him and he'll learn his lesson about robbery of gold" said Mayor.
Check out this comparison between them: http://img62.imageshack.us/img62/566/comparea.png