Elecit (エレキット Erekitto) is the "companion" (for lack of other terms) of Doncatch in Jupiter's stage in Mega Man V. It is an electrical enemy that flies around and shoots sparks. It can also electrify some parts of the ground.
The Bubble Bomb is highly effective against this enemy as the floating projectile will travel to the ceiling where the Elecit will spend most of it's time, killing it in one hit.