If anyone was looking to be one of the Clown Gang members seen from TDK, I found this costume site that has all the masks. I got mine and its really great. They arent hard plastic like the movie ones but the one got was good thick latex that was nice.
http://www.buycostumes.com/browse/_/N-/Ntt-Clown+mask/results1.aspx
That should bring up most of them except "Bus Driver"'s mask, you need to type in Bus Driver for his.
I look forward to meeting any others around Con, I'll be Bozo (The jokers mask) and one of my buddies will be Grumpy. :D :D :D
Oh nevermind, Bus Driver's is on there too. Didnt notice the first time.