So, it’s revealed that Amon became Fandaniel once he took Emet’s
offer and reclaimed the Convocation seat. This included receiving all of Fandaniel’s knowledge
and memories of his past lives - which I expect would include knowledge about advanced soul theory and fragmentation.
During the in-game cutscene, Emet-Selch prompts Amon to send a clone of himself to Syrcus Tower in order to take Amon's place. The idea is that Amon is to put Allag to the test, as Emet claims the empire is bound to fall into ruin no matter what Amon does.
It's this version of Amon - Amon that we fight in Syrcus Tower - that I have always written about in my stories.
However, we don't ever actually see Amon placing a clone of himself in the Tower.
This is just what the Warrior of Light and Scions assumed happened after the Echo's vision.
I propose Amon chose to do something different!
Amon is a scientist, and if he's going to rise to Emet's challenge, he's going to ensure this social experiment is constructed without any extraneous variables.
Just the fact that Amon wouldn't be there to help guide the empire would sway the outcome of the experiment. So, whatever "clone" he left in his place had to be absolutely identical to himself as to not skew the result.
Thus, I headcanon that:
- Amon fragmented his soul, as we know can be done due to the story of the Pandæmonium raids.
- This soul fragment was purely Amon, privy to only selective memories. The fragment couldn't be aware of Fandaniel, Emet's challenge, or that it was a fragment - having that knowledge would skew the results.
- The fragment would be the part of Amon's soul that desired to help in the plight of Allag - saving the empire, and protecting the Allagan people. This might partly explain why Fandaniel then was moved towards nihilist thoughts, having embedded his lifetime's hopes and dreams in the soul fragment.
- Amon wouldn't attempt to perfect a clone of the original Boss!Amon body. It doesn't make sense to waste time doing so. Especially when Fandaniel, as an Ascian, could much more easily just body-hop into a clean, younger clone himself. Also, dropping the soul fragment back in the original body would ensure there were no undesirable biological variables in the experiment.
- Keep in mind, the original Boss!Amon had a far larger body, which would take more effort to clone, and likely make Fandaniel stand out should he have used it. Not to mention, my Amon did a lot of self-experimentation and substance abuse, so... it was not a very clean form to inherit.
Based on these headcanons, I feel that the Amon I’ve written
in my stories, being the continuation of the Amon of Syrcus Tower, could plausibly remain Amon (and not a clone) even in light of the changes to lore.
Through living a new life and his experiences in Eorzea,
this soul fragment has taken on its own identity. He is Amon, but he has begun
to change and develop into his own individual (which we’ve seen is possible for
a soul to do through Alpha’s story).
You could say, based on this, that everyone I’ve ever written with or interacted
with as Amon has had a hand in giving a lost soul fragment its own purpose in life.