honestly I understand that Academy City has rather low moral and a bit insane, but I thought that was just a thing among scientists, not in school girls who are supposed to be high class "ojou-sama"s.
I think they where human before Aleister and the Dandy Dog took them out but survived by just abandoning their human body. I wonder if Synthesize Grid can be considered a level 5.5 the same way we could consider Junko/Awaki/Maidono/Takitsubou/That guy from SCHOOL 4.5?
It is honestly kind of wild how at one point Accelerator was the spare plan rather than Kakine. Though with how Aleister works Synthesize Grid was probably already the 5th spare plan or something lmao.