Dio Brando (later known as just DIO,) is the main antagonist of both Phantom Blood and Stardust Crusaders. His influence is felt through all of the first six parts. He is the first antagonist of the series. He acts as the final boss in both of the parts that he antagonizes in.He was born into poverty in the late 1800s England to Dario Brando and an unnamed woman. Dio and his mother were abused by his father, and Dario’s intense drinking lead to Dio’s mother’s untimely death. Dio blamed his father for her dying, and when he turned 13 years old, slowly poisoned his father to death. Not before discovering that his father had a due to be payed from a man who he apparently saved his life 12 years ago, and getting that debt repaid by being adopted by them