The Anvil as seen in Yoshi's Story, with a Black Shy Guy riding it.
The Anvil is an enemy in Yoshi's Story. It only appears in the last few levels of the game. It is as it's name implies, an anvil with a mad face who is usually carried by a black flying Shy Guy. If Yoshi walks under the Shy Guy carrying the enemy, the shy guy will drop it and the anvil will crush anything it lands on. It cannot be destroyed and must be avoided at all costs.