User blog comment:Fedora Lord Para 348/Ask ParaGoomba!/@comment-24922640-20150214205854/@comment-27822848-20150214212125

I have no clue who Madoka has a rivalry with. She's fighting Goku right now, but I'm guessing... Sailor Moon? That one's requested a lot. Someone also requested Madoka vs. Beerus, and Madoka vs. Superman would be more fair than many vs. Superman fights because Madoka is magical.