I think he can totally feel emotions, just that without a soul he lacks natural connection to those emotions, especially compassion/empathy.
I’d imagine it being like your body suddenly forgot how to breathe on instinct and suddenly every breath you had to take was a conscious action. But by the end of the game I think Flowey learns how to feel compassion again even without a soul to ground him.
the experience changed him to be invested in others happiness.
It just takes a lot of time and experiences to relearn how to “feel” again.
What is this? How is this? We know “who” is this but…exactly how are we seeing this? Where did this come from?
Certainly they did not walk from all the way back here:
where their body was buried, which by now is probably in an advanced state of decay. (also not a zombie)
But is this being something that can be classified as a ghost, when we have seen previous examples of ghosts being a type of monster in the world of Undertale?
Or are human ghosts by nature different then monster ghosts? But this spirit can later identify themselves as a “demon” if the geno-run is done twice. So I submit to you that this is not a normal phantom or demon.
This is Chara’s doppelganger, their eidolon. A greek concept that is
a spirit-image of a living or dead person; a shade or phantom look-alike of the human form.
This fits their physical appearance and would mark them different then the other ghosts of Undertale. But an eidolon isn’t just defined as a kind of ghost, but an image of an ideal, an “idol.” they are a manifestation of the ideal that was created by “your guidance”
There are not just Chara, they are not even just the narration anymore, they are the ideal image of Chara created by the actions of the Player through Frisk.
And in the second to last verses of Walt Whitman’s poem Eidolons (about eidolons) reads this:
And thee my soul, Joys, ceaseless exercises, exaltations, Thy yearning amply fed at last, prepared to meet, Thy mates, eidolons
Thy body permanent, The body lurking there within thy body, The only purport of the form thou art, the real I myself, An image, an eidolon.
The Soul meeting their mate/friend/“partner” the eidolon. Frisk the Soul meeting Chara the eidolon that was created by Frisk’s actions.
The permanent body, lurking within the body. The effects of creating this eidolon are permanent and are not canceled out by True Resets. This manifestation will carry over from the geno timeline and lurk within Frisk’s body until the end of the Souless Pacifist run.
Before reaching the end you can abort the run and Chara’s spirit will revert to being the benign narrator, but once you create this ideal version of them out of LOVE, it’s not going to go away. (unless you fully wipe your data) This branch entity is no longer a spirit bound to Frisk, it’s not the narrator in the next run, it’s a lingering reminder of your past choices.
(so not only are you dooming Frisk, and everyone else, but you are dooming the passive narrator Chara from finding peace in the Restarted timeline as well when you do a Soulless pacifist run)