A Rhomp.

Slipsand Galaxy-1-

Mario avoiding some Rhomps.

Rhomps are new enemies in Super Mario Galaxy 2. They are large, gray cylinders with a smiley face on them. On their sides are two circular stones with square designs. Rhomps appear in certain areas of the Slipsand Galaxy, where they try to flatten Mario. Rhomps are very dangerous enemies. If Mario gets flattened by them, he is dead. This is what makes them like rolling Thwomps.

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