User blog comment:MrPacheco101/The Night Brimestone and Fire Poured From The Sky: Etrigan The Demon & Edward Elric/@comment-143604-20120409045122

This is really, really close for me, but I'm going to go with The Demon. While the Full Metal Alchemist is able to transmute at rapid speeds, he can't quite match the power levels of this violent heathen. While his weakness, Iron, may be formed by Elric's skill, Etrigan's powers allow him to dominate any range with a variety of attacks that will deal enough damage that Edward's own strengths will spill. Though Ed is smart enough to learn when Iron does more damage to his foe, by the time he learns this, the damage Etrigan will deal him will make him to dough, making him crow with woe. Plus- Edward's metal can be melted by enough Hellfire, and iron is not Etrigan's kryptonite- it may do more damage, but using it won't instant-kill him, it's only an ire. The kind of cut that would hurt a mortal man, will only bounce off Etrigan without a damn. With iron- the cut will only do as much damage as it would on a normal old Stan. If normal old stan had the body of a Superman and hits like a minivan.