#3 Batman Vs. Calendar Man
Look up in the sky, it's a numerologist ice-hockey goalie! A TRON gay pride activist! No, it's just the supervillain Calendar Man, whose gimmick was that he committed crimes related to the date. Sorry, we're afraid that's actually it.
Making your crimes extra-predictable when going up against the Master Detective is not just a bad idea, it basically makes you a more math oriented version of the Riddler. And when you're a less creative version of the damn Riddler, you could probably be defeated by a blown dandelion seed, some soggy toilet paper or even (in extreme cases) the actual Gotham Police Department.
Calendar Man is widely regarded as the worst Batman villain of all time, and let's face it, that's saying something. In final proof of sheer mental incompetence, he joined a group called the Misfits who decided to join forces in order to raise their profile. That's right, in a world where crime only exists because Batman can only punch a finite number of criminals per second, these guys wanted to get noticed. Listen pal, if you're walking around dressed like that and people are still ignoring you, take the hint.
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