Giving a vanilla companion “7th party member” type functionality- is this possible? If so, how?

in BG:EE Mods
Hello! I’m new-ish to bg1&2 modding, I’m coming from the switch ports of BG1&2 and I’m not really sure if this is possible!
I’ve seen custom modded in NPCs (Such as Grey the Dog, Brandock the Mage, Afaaq the Djinni, and similar!) that can function as “seventh party members”.. Is it possible to convert(??) a vanilla follower (like Yeslick, Imoen, etc) into a similar framework / give them similar code (however these mythical, seemingly impossible companions manage do it, as I’m quite frankly not sure!)
They don’t really even need to be able to fight or anything.. I’d mainly want the extra’s for RP reasons, i.e. Banter and dialogue. Any leads or suggestions would be greatly appreciated, sorry for rambling and I’m sorry if this isn’t the right board to ask this.. I’m new to actually posting on forums instead of lurking!
I’ve seen custom modded in NPCs (Such as Grey the Dog, Brandock the Mage, Afaaq the Djinni, and similar!) that can function as “seventh party members”.. Is it possible to convert(??) a vanilla follower (like Yeslick, Imoen, etc) into a similar framework / give them similar code (however these mythical, seemingly impossible companions manage do it, as I’m quite frankly not sure!)
They don’t really even need to be able to fight or anything.. I’d mainly want the extra’s for RP reasons, i.e. Banter and dialogue. Any leads or suggestions would be greatly appreciated, sorry for rambling and I’m sorry if this isn’t the right board to ask this.. I’m new to actually posting on forums instead of lurking!
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Comments
It wont gain experience and level etc. And some features will be locked, like inventory.
You could add a way of party him, but its a lot off hassle because you would need to replace creature, else he wont know that he has theese items, a new version will basicly spawn instead.