Giga Spiny

Giga Spiny (or Big Spiny in PAL regions) is a boss from Super Mario Galaxy 3.

Attack Strategy
Giga Spiny will enter its shell and shoot out Bob-ombs which Mario can catch. Mario must throw the Bob-omb at the boss, which will cause it to flip upside down, revealing his weak spot under his shell, which Mario must Ground Pound. Afterwards, the Giga Spiny will enter it's shell and try to squish Mario. The process repeats 3 times and a Power Star is saved.