OK! 'bout ran out of time on this one but here's my entry for ~blue-nadir's Crossover Showdown!
I didn't get to include all the characters I'd been plotting throughout the week, even though I really wanted to. But these two and the castle were more than enough for one weekend. I didn't intend it, but this actually turned out to be pretty relevant, especially given where we are in the story - Harry, the quintesential hero, poised to engage in battle with Voldemort, the classic villian (who has been described as having a face like a skull and a high-pitched voice ) But I like "Castle Hog-Skull" the best Kinda based off Castle Greyskull (obviously) and the winged boar statues that flank the gates to Hogwarts.
My white ink pen went a little funny on me while I was working on this. Tried to clean up all the drips and blotches, but there were a few I had to leave -_-