If I remember correctly, you said Six can create stuff inside himself. How does that work? Does he need the materials for it? Does Stereo just shove silverware into his mouth so he can make weapons?
theres three ways to make manifestation of weapons and stuff happen;
1) Six makes the things appear by stereo reaching into him and straight up manifesting them as she reaches back out. Six’s species shares a slight psychic link (nothing like reading minds or anything) with their owner so that when they reach into them, they can pull out what they need. It’s advantageous for stereo and six to be teamed up since stereo is pretty simple minded and most of the weapons she wants are “GUN MAKES BIG BOOM” or “BIG STABBY SWORD”
2) the weapons/items have been put into six by stereo already. Six’s species are basically walking pockets of portable infinite subspace so they can have as much stuff put into them as they can create as well
3) six can create weapons on the fly based on the general idea of what weapons he’s created in the past
its still sort of a rough idea but thats the gist of it. I kind of like the idea that you mentioned with six possibly having materials put into him to make stuff. As of now he can pretty much just make the stuff but that could be like a catalyst or something!
