Originally posted by leonidas
anit-metal just gives off vibrations that break down the bonds in any metal. if ultron couldn't stop a random effect, i don't see how he could stop someone ACTIVELY doing what anti-metal can do....i agree with bran--it seems ultron should win, but without some proof he could resist mags power (i'm 100% positive he could defend against it with some knowledge of who he'd be facing) but without prep i don't see why he would be naturally defended against mags. mags doesn't even need to affect the outside--he could simply go straight for the insides of ultron and by-pass his exterior altogether. mags has some ridonkulous feats that suggest he could do so easily.
I'm 100% sure he could defend against it too, with prior knowledge.
But the robot is smarter than any human, you don't think he would have already calculated his enemies trying to use magnetism against him? He would have calculated and built in a defense in any number of his upgrades.