Curious: What is the most Complicated Backstory....

[From The Shadows]

Donna Troy. Back in the day, she's had like three different origin stories, the Nu52 happened and she got yet another one. I'm not sure what her deal is currently.

This is who I was thinking of actually.

Psylocke and her body switch with Kwannon back in the day. It's a doozy of a story.

And this.