I asked about Mario/Sonic, and it didn't even get half the noms as Mario/Bowser. On the bright side, we FINALLY get Mario vs Sonic in a character battle. I don't think they've ever met.
Watch Kirby ruin it or something.
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BOP Results: http://www.freewebs.com/charmander6000/Rivalry%20BOP.xls
BOP Topic: http://www.gamefaqs.com/boards/8-gamefaqs-contests/60566352