The Little Ds theory #1
The little Ds are remnants of when the brothers became demons. Or atleast they are the excess magic they carry. I think Diavolo would have created the little Ds so that the brothers could be able to relax a bit without worrying about their powers going overboard and being difficult to control. They were all angels at one point and now they are all high ranking demons. That type of level up might be difficult if it happens too suddenly.














