Poro

A Poro is an enemy in the first and secret Space Zone levels of Super Mario Land 2: 6 Golden Coins. It resembles a small spaceship and attempts to crash into Mario while in midair. They orbit large and small blocks. If they are seen orbiting empty space, they are usually orbiting an invisible block. To defeat this enemy, Mario must simply jump on top of the Poro or hit it with a fireball.