Board Thread:General Discussion/@comment-32051879-20170718145307/@comment-25926288-20170718151933

A quick note: "The Darkness" is also the name of the Dark One magic, so your theory might sound a bit confusing. XD

But yeah, Once pretty much said there was a war between Darkness and Light, heroes and villains being their emissaries and such. However, I think the Concepts of Darkness and Light are less anthropomorphic and more....conceptual.

On Fiona, I think she did "practically invent" dark magic, but most probably get confused because they conflate everything with a few words. It probably means she knows how dark magic works on a fundamental basis, or created the way dark magic was done after her transformation. (Just Dark One magic =! Dark magic)

I think she was an okay villain, but needed more time to shine. I don't think she was "possesed", but consumed by darkness, her dark emotions and thoughts. Just placed it that way so there's some personal responsibility for the characters.