Kamadoma

The Flea (カマドーマー) is a small jumping cricket robot found in the stages of Cut Man, Bomb Man and the first part of Wily's castle.

In Mega Man 3, actual flea robots jump out of the Tabby robot at Top Man's stage, but it's unknown if they are related.

They make a reappearance in Mega Man: Powered Up. On Easy mode, they simply jump back and forth in a short, high arc. On other difficulty modes they act as normal.

Trivia
"Kamadōmā", or "Kamadoumer", is a play of Kamadouma, Japanese for Rhaphidophoridae.

Similar enemies
Enemies similar to Flea.
 * Mecha Kero