Exdeath vs Cloud of Darkness

The Cloud of Darkness is not a cloud or a woman, "it" takes the form of a woman but no one knows what it really looks like.

But I'll have to go whith the Cloud of Darkness, it was a powerfull foe.
Her particle beam is extremly annoying since once it took a bit of beating it would start using it...a lot.
I also find the Cloud of Darkness a very intresting character, so much that it's become one of my favorite villans, I just wish they would give it more of a story. >.>