Speculations are finally over and we have the name of the next DLC fighter - it's the iconic villain Sepiroth from Final Fantasy VII. I expected someone else personally but it's such a pleasant surprise and I can't wait to see him in action.
We don't have a lot of information yet but Nintendo sticks to a "December 2020" release window so we won't have to wait long to see him in action. Oh yeah, check out the trailer, it's truly epic: