Pinhead

Pinheads are a type of creature appearing in Super Mario Galaxy 2. Each appears as a bowling pin-shaped enemy with two beady eyes, a red squiggly mouth, and a yellow antenna. These creatures are very rare, appearing in only two galaxies: Boulder Bowl Galaxy and Melty Monster Galaxy. They can be defeated only by Rock Mario, and when they see the plumber turning into a rolling boulder, they tremble desperately. When hit, they release multiple Star Bits. However, if Mario comes close to them, they squeal and hide underground until he moves away.