As you can see in the op, many npcs characters and persoanlities have changed but their roles from the game remain. Covenant leaders and bosses remain the same. But for example, at firelink shrine petrus has been replaced with Mother Jeanne of White and Anastasia has been replaced with the Masked Firekeeper. As we discover new areas new npcs will be revealed. I mainly did this so we could have some interesting and fresh interactions within the dark souls world and not just the cast of lovable nocs we are used to