It takes real chutzpah to release a game set in a world like this to show off your miniatures rules. I really admire that.
I do wonder, though, why they used the real (copyrighted) names for all these characters. The names could be changed very slightly to remove all liability and also provide another level of parody.
Also, this game is begging to have its own (preferably crudely drawn) cardstock minis included. You're never going to find similar characters in another cardstock set or in metal ... well, maybe Chocula, but that's it.