|Artwork of a Mag Fly from Mega Man 3.|
When spawned, they will fly horizontally towards the player's position on the x-axis, and will continue in that direction even if it passes the player. It will however, reverse its direction of travel if it collides with something resembling a wall.
When a Mag Fly travels above the player, they will be pulled into the air, just slightly over 1 tile high, and be carried by the enemy's magnetism. The player can move around in all four directions within the magnetic field, and are still able to shoot their equipped weapons. Destroying the Mag Fly while being magnetized, or using the directional buttons to leave the Mag Fly's magnetic field, will return the player to normal.
Mag Flies can be troublesome as they can potentially pull the player away from areas they want to travel to, or pull them into dangerous hazards, but they can also just as equally be useful, for traversing over large bottomless pits, large beds of spikes or burning oil, or over high walls, that the player may not otherwise be able to get across.
- Mag Flies also appear in the games Mega Man II / Rockman World 2, and Mega Man: The Wily Wars.
- Originally in Mega Man 3, Mag Flies where immune to Magnet Missile, Search Snake, and Spark Shock. This is not the case in Mega Man Maker, where the enemy is now vulnerable to both Magnet Missile and Search Snake.
- If the player is currently being carried by a Mag Fly's magnetism, if another Mag Fly appears and also magnetizes the player, the newer Mag Fly's magnetism will be given priority.
- If multiple Mag Flies traveling in the same direction, with identical locations on the x-axis, magnetize the player all at the same time, the power of the magnetism will stack.