When playing with multaple characters in 1 book

So. I have multaple characters, both makeing individual choices that affect their individual variables. Would I have to then, define variables, such as 1 character has different variables, still stuff like stoic and such, but defined differently from the other one? So, 1 character’s decisions don’t raise or lower variables for the other one?

This theme has been used in several threads like for instance, this one.


Please refer to previous threads regarding this topic, as @poison_mara linked above.