Amelie was a Butterfree, which is a moth-like Pokémon:
I think she is much cuter than the original.
I was a Pokeball, which several of the trick-or-treaters got a kick out of. They'd very excitedly tell me what type of Pokémon they were dressed as and I pretended to know what they were talking about. I think we got about 30 kids this year.