[X-Men + Harry Potter] Starting Today, I'll Beat Up the Dark Lord

EC transmigrates into HP

Starting today, we're beating up the Dark Lord

The story will probably span three eras: middle-aged EC from Reverse the Future, then the Marauders' era in HP, and finally the next generation.

Who is the unlucky Dark Lord? Eric? Gellert? Or Voldemort?

Do you think I'll tell you who it is? (That's right, the blurb is just here to mess with you.)