I am on the periphery of X-Men. I haven't read the comics, think I saw one of the movies on TV maybe. But a friend (the one friend I knew in real life before I knew what "fandom" was who also knows I'm in fandom, because she's here, too) is big into X-Men, so I hear about it. But I have read several Percy books (and a few of Riordan's Egyptian books), and they're pretty amazing, too!