You must have plenty of characters on that list by now. Just start a tournament. Just run it the way __V__ runs the quotes and masters of cinema tournaments; give people three choices, remind them when more votes are needed (you probably need about 10 votes per round and no ties), and whoever wins and comes in second get set aside for the second wave once all the initial characters have been used. And so on until there's a winner. You can even only have the 1st place winner go on to the second round if you want the tournament to go faster.
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