Board Thread:Fun and Games/@comment-14248438-20160216161817/@comment-27625106-20160222202330

No, it's not Red. It's in a secret room in Waterfall i'm guessing because I forgot where it was. It has a Flowey dialouge trigger, though. (The room)

(I have no idea can i please just bypass this) Ok, i'll do it. (I'm doing Toriel + MTT) First, let's say that Mettaton is in his box form, and Toriel and MTT are teaming up on the Green Soul. (You didn't specifify what form MTT was in.) In MTT's box form, he has max defense. In his box form, he would easily outlast both of the other characters.

Second: MTT is in his EX form. This would be a lot trickier, because I've like NEVER died to MTT EX. But that's because I rose the ratings. The Green Soul could not have raised the ratings, plus Toriel is attacking. That is like absolute H***, plus the Green Soul can't turn yellow. So, either way, Mettaton and Toriel win.