He is freezing cold and has a bad attitude to match. Rapidly throws snowballs that pop bloons once before freezing them. For better or worse, this agent melts after 10 rounds in the game.
~ Official description
Mad Snowman is a special agent exclusive to Bloons TD 5 Deluxe. It costs 60 to purchase and it shoots snowballs at a moderate speed. Every time it hits a bloon, the bloon freezes. It disappears after only ten rounds. The Mad Snowman Pro requires the Mad Snowman to be placed 50 times, totalling to 3000.