To clear the stage, you need the help of a couple of Flying Assbots. They are supposed to be your ally and have busters to shoot enemies. However, they are the worst partners ever. They shoot you instead of the enemies, and they never go near each other. That's where their name comes from.
Poyo Ride considers the Foot Holders/Flying Assbts to be the most annoying of the three assbots in actual Mega Man.
One incident happened when a Flying Assbot shot another Flying Assbot, making the stage unclearable.