Twelve is very anxious and paranoid, and is very likely the source of dermatillomania in the system. They tend to scratch our arms when agitated and pick our face literally all the time. They front infrequently, usually at times of perceived high stress (when theyre having high stress, but nobody else really is). Lots of internalized ableism. Not actively a troublemaker, but causes a lot of general psychological damage and mild physical damage because of their own personal issues. Would probably react to therapy.
Nine is the exact opposite. She doesn't really react to the rest of the system, and she doesn't entirely believe the rest of us are here, which certainly doesn't help the rest of our doubt issues. Nine has a habit of arguing with me in what she assumes is a subconscious way about pretty much everything. She uses words she shouldn't, she's rude, and she doesn't care about groups of people that get systematically shat on. Twelve trusts nobody except their systemmates; Nine trusts nobody, period. Nine cares only about herself and believes only in herself. Active troublemaker. Would probably resist therapy as much as she resists acknowledging systemmates.