[Steel Guardian]

Originally Posted by Iron Maw

Anyone think that Stein could become a villain at one point in the manga, due to,

Spoiler for Spoiler:

He's insanity?

It's very likely. But the only way I can see this happening is if...

Spoiler:

Something happens to Mary (or what's her name) that was assigned to him as his new weapon. Because she has a positive wavelength, Stein's negative is balanced out.

But if she's destroyed, then his negative wavelength may go wild.