Mega Nest

Mega Nest (メガネスト) is an immobile enemy in Mega Man X4 that appears in Web Spider's stage. They spawn Kyunbyunn, and in the very few times Mega Nests are encountered, they hang from the ceiling like bee hives. They later reappear in Rockman X DiVE, and act the same as in X4, though they no longer have the Repliforce sigil present.

Kyunbyunn
Kyunbyuun (キュンビューン) is a wasp-like enemy that appears in Web Spider's stage. It also appear without the Mega Nest in Mega Man Xtreme 2 with many of the same attacks. They come out of the Mega Nest and attack by flying towards X or Zero. Kyunbyunns later reappear in X DiVE, acting the same as in previous appearances.

Etymology
"Kyunbyuun" is probably a combination of the words, "kyūn" and "byūn". Both of them are Japanese onomatopoeia of fast moving sound.

Similar enemies

 * Kyuun B
 * Bomb Been