In the Stand Alone Complex timeline, Kusanagi is literally several different people throughout the story. She assimilates memories from a few different sources (the tank in episode 2, the Laughing Man, and Kuze, Puppetmaster in the SAC:SSS movie). It's implied (and made explicit in other GitS timelines) that the only reason she is able to do this and maintain her sense of self is because she was "cyberized" as a young child and had to figure out the answer to the question "who is Motoko Kusanagi?" independently of her physical form.
She even has a line towards the end of the SAC:SSS movie that says something like "next time you meet me I might be a completely different person". But there is indeed a "base" personality that she tries to hold on to (e.g. via her watch) despite the wide range of memories she acquires.
She even has a line towards the end of the SAC:SSS movie that says something like "next time you meet me I might be a completely different person". But there is indeed a "base" personality that she tries to hold on to (e.g. via her watch) despite the wide range of memories she acquires.