User blog comment:LuxrayBlast/Possible for Shadow to be original?/@comment-34762924-20180915120018

Now that I think of it, we do have space for 2 more fighters (at least on the Smash website), and we haven’t seen him as an assist trophy, (unlike poor WAAAAAALUIGI) and that DID lead to a Dark Samus (no assist trophy seen in trailers) and Isabelle (same as Dark Samus) being fighters, so it is actually very possible.