Aren’t dave, jade, and Nana also a part of Bec Noir because of Jadesprite, Davesprite, and Nanasprite? And if that’s the case then how come bec noir still went on that murder rampage and killed so much, wouldnt the nana part of bec noir stopped the death of Dad, and whatnot

He isn’t part nanna, dave or jade because they were prototyped post-entry. Only pre-entry prototypes get factored into the rings’ powers