Item Balloon

Baron von Zeppelins are different colored balloons with smiley faces that appeared in Super Mario World 2: Yoshi's Island and Yoshi's Island DS. Barons usually carry an Item of a helpful or harmful nature, ranging from coins and extra lives to missiles and Needlenoses. Barons drop the item/enemy they're holding when a Yoshi goes under it (except in the case of 1-ups). Three Barons also carry crates together. They also help in the final battle against Baby Bowser by dropping Giant Eggs.

In Yoshi's Story, a similar type of species called Air Bags appear.