User blog comment:Tadmonkey/Ridley: boss or fighter?/@comment-25278938-20140811184635/@comment-25278938-20140811210317

Look, Ridley is too big, but I know why you think Ridley will be in...

When Sakurai announces an assist, trophy, or boss, he clarifies they are not playable.



But when he was getting around the subject of a playable character, he avoids mentioning their name. When he announced the Palutena's temple stage he referred to her as "The goddess of Light"

So when he announced the metroid stage. He says "An enemy from Samus' past can appear any second" and with this picture he says something like:



So now I understand why you think Ridley will be in, but this information doesn't confirm or deconfirm him. If Ridley really were to be announced, then it would be this month, because most metroid games were released this month.