Board Thread:General Discussion/@comment-32335103-20170624122455/@comment-3518576-20170624155300

''Also, I can’t help but notice that if I were to create a creature which “SOUL” was entirely magical and the “body” was entirely physical, we would get what Flowey is? It’s what Alphys did: bind a “MAGICAL SOUL” in a “PHYSICAL BODY”''

Sorry, but this is incorrect. Alphys infused the Golden Flower with Determination, not a soul. Determination is merely an ingredient in souls; there are other aspects that must be present. It's very likely that the other ingredients are Bravery, Justice, Kindness, Patience, Integrity, and Perseverence (all listed in the Snowdin golf game).

On the Genocide Route, Flowey even describes Frisk as being "empty inside, just like me". On this route, Frisk is completely devoid of the above six qualities; they are overpowered, unjust, cruel, expedient, corrupt, and apathetic. And we know that Flowey is exactly the same way, based on his actions and backstory.

At best, what Flowey has is a haploid soul -- a crude mockery of an actual soul composed of only a single property (Determination).