Fly Boy

Fly Boy, also known as Prop-Top in the Mega Man 2 instruction manual for the U.S., is a strange pogo-like robot in Mega Man 2. They appear in Crash Man's stage, Heat Man's stage, and in the second section of Dr. Wily's castle. They appear infinitely from the top of the screen. After landing, they levitate up slowly for a bit, try to pounce Mega Man swiftly, and repeat. His weakness is Air Shooter, but Metal Blade is also effective.

The basic movement of them is going up in the air and trying to crush Mega Man.

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

Trivia
They are green in Heat Man's stage and Skull Castle, but red in Crash Man's stage.