The Ultimate Bingo machine was a device used to determine the quarterfinal pairings for the Battle City tournament. It is a bingo machine modeled to look like "Blue-Eyes Ultimate Dragon". One of the dragon's three heads is inside a ball drum, with balls numbered 1 to 8. Two balls randomly go into the head and come out each of the other two heads. The quarterfinalists whose numbers corresponded to the ones drawn Dueled each other.