Date of Birth: 26 February

Height: 162cm

Weight: 45kg

Blood Type: AB

Cain McDonald was rich young boy.he is also the Super Five. At first he pretended to be a good guy to Yamato. But it was just a trick to destroy Cobalt Blade. His childhood friend Joshua was also learned that he is Cain's butler. He and Joshua joined the Shadow Alliance. He was also defeated by Gray Micheal Vincent. His b-daman is Knight Cavalry which was destroyed replaced by Black Knight and then replaced with Lord Cavalry.