User blog comment:LeftywinfreeMTW/UNUSED PALUTENA'S GUIDANCE!?!?!?/@comment-25096445-20141219212251

I don't think it's Tabuu since Palutena references the SSE (Mario & Mr. Game & Watch) so Palutnea would know. Mewtwo is unlikely because Palutena knows all about Pokemon. I think it's Isaac. He's great for DLC.