User blog comment:B214/Volume 21 info & spoilers/@comment-26285797-20160322150441/@comment-1359322-20160322162923

@HI, well Dulio's BB is actually something you can guess from the past volumes.

@Going, yes he uses his subspecies. Well it's not guaranteed that the original will be better than the subspecies. Subspecies tend to be modified to suit the user so the effect can sometimes be better than the original.