SkyHighPixel

I have to disagree with what you're saying that the other 5 will be monsters with certain costumes like the rocker monster or zombie pirate because keep in mind we've already had a normal zombie and Frankenstein-like monster in previous minifg series and lego is probably trying to differentiate these figures with those series and their MF series. However, you are most likely correct about a dia de los muertos figure not being very likely because it's a completely different thing from halloween and this is more towards everyone's typical idea of halloween monsters, costumes and such. Also, something I'd like to say about the zombie cheerleader is how I really don't like the fact she is smiling... it wouldn't be a problem if she has 2 faces one smiling one frowning or a typical dead expression, and I really wish she were a zombified version of one of the previous cheerleaders but it is nice that she has a new hair mold.

Since it seems like they're making previous minifigs into monsters they might possibly make the bride from series 7 into some sort of monster. it would be really cool to see her as a ghost!

You can get her on ebay with a different hairpiece for $16.99 + Shipping that's probably the cheapest you're going to see her for unless a future set uses the dark tan ponytail again.

could an evil genie be a possibility?

I've noticed they tend to make pairings (sort of) in previous lines(series) Ex: Surfer guy later surfer girl, and in this series it appears the series 2 vamp gets a mate. lol so it would be hard for me to see them not make her especially since this is monster themed and they're on their 5th Frankenstein now. also when you say short minifig my mind instantly goes to a bat for some reason...

I really hope this series will contain Frankenstein's bride!