Warning: Contains spoilers for JoJo's Bizarre Adventure: Crazy Diamond's Demonic Heartbreak chapter 15.JoJo’s Bizarre Adventure: Crazy Diamond’s Demonic Heartbreak chapter 15 has just been released, and it hints at a surprising origin for DIO’s sons. Stone Ocean introduced Ungalo, Rikiel, and Donatello Versus, three sons of DIO who were drawn to Pucci after he fused with the Green Child, and their existence has always been something of a contrivance in the series. It was surprising enough that DIO would let one woman—Giorno’s mother—escape him, but the idea that he allowed another three to do so was nothing but odd, and it felt like it was done solely as an excuse to bring new villains into the final act of Stone Ocean.

https://screenrant.com/jojos-bizarre-adventure-dio-sons-origin-surprising/