Edward Elric (Fullmetal Alchemist) weakness

[Blahblah9755]

So I was looking at Ed's page and noticed that he didn't have magnetism listed as a weakness, which he should as he has a fullmetal arm, and if someone can use magnetism, they can stop his ability to use it by controlling it directly, or controlling the gears inside it.

Also, I was wondering, since automail opperates based on the electrical signals from the nervous system, that skilled electricity manipulators may be able to interfere or even override his control of the arm.

 

[Gemmysaur]

And he can counter that by coating his arm with non-magnetic material right? He has great knowledge of the elements to the point that he knows the chemical components of the human body. It's not farfetched that he can do something about his arm getting magnetized.

As for electricity manipulators, that's not really a weakness methinks. If say, Hei touched Ed by the arm, he'd get the same result as if he touched Roy.

 

[Blahblah9755]

Just coating something with a non-magnetic material wouldn't necessarily stop magnetism from effecting it, powerful enough magnetism can easily effect things through walls.

Also, if he doesn't know the opponent can use magnetism, they may see he has a metal arm and leg and use it to catch him off guard, and by doing so they would immobilize him and stop his ability to use alchemy.