Board Thread:General Discussion/@comment-27686267-20160128185928/@comment-27701762-20160213210802

Is Asriel The Best? wrote: People always talk about the "nuetral run plothole" of Frisk getting out of the barrier without a monster soul, but how do we know he ever escaped? People always just state the fact that Frisk escaped as undenyable. We have no idea what happens after the Photoshop Flowey fight, and I don't know of any proof that Frisk escaped. This is definitely worth pointing out. There are certainly other perfectly viable explanations for what is happening (i.e. Frisk is still trapped somewhere in the Underground; Flowey created a pocket universe for the fight and Frisk is trapped there). Without any proof that Frisk has passed through the barrier, the claim is only conjecture. Which in turn means it cannot be used as proof of any other theory (one could put it forward as potential proof, on the supposition that it is correct, but not as direct proof). If you want to use Frisk's escape as proof, you first need to prove Frisk's escape.

The other point of proof is that in the two non-Neutral endings Frisk merges with Chara or has the soul "re-fuse" thanks to Asriel (this explanation is a bit weird). But this is also conjecture, not proof. We certainly know there is some sort of merge between Frisk and Chara in the Genocide route, but we don't know the exact nature of that merge except that Chara takes over. Likewise, there is no evidence provided for the "re-fusing" in the Pacifist route beyond its poetic contrast with the Genocide ending. This claim in itself relies on the assumption that "Frisk" is the combination of the Chara/Asriel soul and Chara's body. But why accept this assumption over any other explanation, including any which posits that Frisk is their own person?

There's a lot of uncertainty surrounding the particular points, so there's not really much that can be brought forward to prove or disprove this theory (or any other that deals with the nature and history of Frisk and Chara).