Well, I'm having a bloody hard time deciding between L and Yuki. They're both characters who take themselves
way too seriously. They're both characters who, for that reason, need to dance.
I guess it boils down to which one you can get the right look for. Either way, you'd be cross-dressing, so it's a question of whether you can do
creepy anti-hero or
rather androgynous but really more than a little attractive bishie. Of the two it's my impression that Yuki would be more challenging, and thus more impressive, if done correctly. So, that's my vote.
In any case, pictures are a must. Video if you can.
EDIT:
I'm guessing
chibi pokemon are out of the question?