Um....good question, Mugenbine is an offshoot of the Machine Robo line, which when it came to the states years ago was called gobots.... but these guys never came to the United states, being a very recent toyline.
you know Bandai should bring this toy franchise back, the toys are small and perect for their modern consumers. Also they can't muck it up like they muck up their power ranger toys and the digimon fusion toys. WHY DO THEY REDESIGN THEM, IT WILL SAVE MONEY JUST TO HAVE YOUR MATES IN JAPAN MAIL YOU THE BLUE PRINTS TO THEIR OWNS AND SELL THEM! I Might actually keep it as well.
This? why this is Mugenbine my friend, and this particular one is known as Mugen Police, a police themed figure and parts set. And the video is showing a few of one of the many things that can be done with the toy.