>>54277497The main evidence is how different she is compared to her sisters. All older and have a flower naming scheme (Lilly, Daisy and Violet) that she weirdly doesn't follow. That's admittedly worth an eyebrow raise but the theory just goes insane from there.
Basically the underwater ballet her sisters put on in the Misty mernaid episode was supposed to be her origin story. That the "secret cave" she lived in with the Goldeen and Seeking was actually Cerulean Cave. (weirdly you CAN actually find both those pokemon there in the games) The "bad guys" that came to the cave looking for a treasure in the play was suposed to represent Team Rocket looking for Mewtwo as well.
