DIO is the Joestars' greatest adversary in JoJo's Bizarre Adventure, but he may actually have unintentionally helped one JoJo by granting him a Stand at such a young age. It started when DIO revived using Jonathan's body and developed his own Stand. This had a trickle-down effect on Jonathan Joestar's descendants, triggering the ability to control Stands in Joseph and his grandson Jotaro, not long before 1989.
https://screenrant.com/jojos-bizarre-adventure-dio-josuke-stand-help/