Eeeeh... Long story:
When I was a kid, I was seriously obsessed with books. Halfway through the Percy Jackson series, I got a Minecraft account for my little brother. We couldn't work out a name, and eventually I thought of my two favorite book characters and their respective powers. So I just put those two down, and the name sounded cool so we went with it.
Eventually it began to stick to me as my numero uno username whenever I made an account for a website. My brother ditched the name for his account, so now I get full rights to the name. And so whenever I log into Imgflip and see a meme like 'Upvote this and a Minecraft player dies,' I think of how I got my username and then I go on a book spree and then I end up making memes about how much Twilight sucks.
:D