Puyoyon

Puyoyon (プヨヨーン) is a blob-like robot in Mega Man 4. It is native to Toad Man's stage, and mainly is in the first part of the sewers after passing the rainstorm. It can stick to the ceiling as well as move on the floor.

Hits Data Chart
Amount of shots/hits from Special Weapons it takes to destroy a Puyoyon.

Trivia

 * "Puyo" is Japanese for "blob".