An Ending to Mark a New Beginning (spoilers)

[thegreatonemal]

Additionally it's the most underwhelming mystery ever. "Surprise, I'm not who I said I was, although you may have never met the other person I was pretending to be and everyone else had worked it out anyway. Now I get a costume change but that's about it."

It sets up the whole "stop living in my sister's shadow(and father's) shadow to be my own person tropes. I wouldn't say it's underwhelming.