Some of my opinions for now, will update with more opinions later.
Flying Demon Trio: I'm curious as to these 3. They're all completely seperate from eachother in national dex order with atleast 1 Pokemon in between each member, but I'm mostly curious due to the fact they appear to be based on demons, or the Raijin, which is a god of thunder who is described as a demon:
http://en.wikipedia.org/wiki/Raijin
As for design and some moves it might be able to learn belly drum or some kind of drum based move because it beats drums to create lightning. I find it funny how they're based on a thunder good/demon yet only one is actaully electric type, one of which is ground type (The opposer to electric), and one is simply pure flying type (The primary type electric has ups againsts). So far I'm curious as to what they might look like.