Mega Nest

Mega Nests are an immobile enemy in Mega Man X4. They appear in Web Spider's stage. They spawn Kyunbyuun, and in the very few times you encounter one, they hang from the ceiling like bee hives. 

Kyunnbyunn
Kyunbyuun (キュンビューン) is a wasp-like enemy that appears in Web Spider's stage. They come out of the Mega Nest and attack by flying towards X or Zero.