I think I'll side with Lexifox on this one. Even not so evil fair folk (like the ones on Shakespeare's A Mid-summer Night Dream) are kinda jerkish.
And she is right about Reshiram and Zekrom too. People were like "ZOMG Reshiram is going to be a Light type" and with their little cliche in mind they decided Zekrom would be Dark. Guess how that one turned out.