Rerere

Rerere is an enemy exclusive to the last stage of the Pumpkin Zone in Super Mario Land 2: 6 Golden Coins. They attack by bouncing back and forth as they sweep the ground, and if one of them hit Mario, he will suffer damage as a consequence. It takes one bounce on top of them to stop them, or a Fireball. They are perhaps the toughest foe in the game to directly bounce off of, due to the fact they are so long and thin.