User blog comment:Legato Bluesummers/The devil?/@comment-4493594-20111010085544

If god is evil then the devil must be good? Ah, dualism. Nice! The influence of fundamentalism in religion is truly something to behold.

I read the terms God and Devil only twice in OP: Enel = God and Devil Fruit. There was this nice phrase about power and responsibility in Spider Man. I think you could apply it here. So, no, I don't think the devil is necessarily good OR evil. Plus, it all depends on the point of view.