This is a good quiz, but I noticed some characters seem to be on here twice. "Emil Hamilton" and "Professor Emil Hamilton" being one example, Maxima and Signal being two others. Also consider accepting just "Ace" and "Etrigan" as answers, right now typing out in full "Ace the Bathound" or "Etrigan the Demon" is going to cause people to miss an answer they'd otherwise get. Similarly, consider accepting "Mr. Miracle" instead of only "Mister Miracle".