Board Thread:Fun and Games/@comment-31953669-20180306171113/@comment-35317948-20181221022807

Springtrapthecreepyrabbit wrote: What if Frisk got them??? Unless if you're refering to Alternative Frisks who aren't human, Humans can only absorb Monster souls.

But if Frisk wasn't human and then absorbed the human souls, I don't know what they'd do, aside from trying to exit the underground. Since we control them, and have very little knowledge of Frisk's personalty outside of our control.

But anyways, since canon Frisk is without doubt a human, they can't do this. (Despite all theories claiming Frisk is a monster, or neither human nor monster)