I've got a question about some Transformers cassettes I found on ebay. They're selling what is obviously some knockoffs of Takara cassettes like Ravage and Ramhorn, randomly colored. But they also had some cassettes that I didn't recognise though - I'm wondering whether they are new and just to scale with that cassette robot line, or whether they are based on something Japanese or Diaclone?

http://shop.ebay.com/merchant/vinivv...dkw=&_osacat=0