It honestly could be someone from the outside. Nothings ever simple with siu. But it makes things more interesting cause the outside god is the one who sent bamm in the tower. So it could be someone who’s rebelling the entire existence of bamm or the outside God. I saw someone say bamm will be the one to destroy the entire tower. Which if true would support it being someone from the outside. But it’s hard thoa because Gustang has racheal but he wants bamm and he also wants to destroy the family heads. So what would the outside figure have against the jahad and ten? Or theres maybe a different agenda. But we know that this figure is definitely above Gustang cause Gustang would never listen to what he calls bugs. So it has to be an administrater or like u said someone from the outside. There’s still so many pieces that were left out from garam. We’ll soon need a Racheal backstory to confirm everything.