Peahat

Peahat is a reoccurring enemy in Super Luigi Country and is found in Levels 8 and 18. They are also a reoccurring enemy in The Legend of Zelda series.

They have no connection to the story

Level 8
In this level, a Peahat will always be following you behind your back while your trying to collect Rupees, so you need to to try to outrun it.

Level 18
In this level, a Peahat will keep moving back and forth from the bottom left and the corridor with the Star, he moves at a very fast rate too.