Characterization
Dio Brando's treacherous, sadistic nature may be partially explained by his abusive upbringing at the hands of an alcoholic father, whom he later killed by a slow poisoning over time. He is also ambitious, narcissistic, arrogant and megalomaniacal. He will do anything to get what he wants, even if it means trampling people, like he did to Jonathan Joestar when they were young, and relinquishing his humanity in favor of becoming a vampire. However, Dio shows a good side to those who are good to him. In particular, he has shown favorable attitudes towards Enrico Pucci and Vanilla Ice, who also showed unending loyalty in return. Dio also has a passion for reading, as he is found in the library of his Egypt mansion many times.
Diego Brando is the main antagonist and Dio's alternate universe counterpart in Part 7 of JoJo's Bizarre Adventure, Steel Ball Run. Even though the effects of Made in Heaven altered history, Dio still exists in the new world, under the name of Diego Brando (commonly referred to by his nickname Dio). He is very similar to the "original" Dio in both looks and personality, however, Diego is a famous professional jockey from England participating in the Steel Ball Run race across North America. He was raised among a group of homeless people, after his mother saved him from drowning in a river when he was still a baby. He was later adopted into nobility when his talent as a jockey was discovered.
Although he was raised with much love, he is cold-hearted and will do virtually anything to win. After he loses the first stage of the Steel Ball Run to Gyro Zeppeli, he gets mad and considers Gyro his personal enemy from that point onwards. Later in the series, after losing another round to Gyro, he joins the President of the United States, who is searching for the body-parts of "The Saint", which are said to grant great powers. By doing so, Diego hopes to find a way of defeating Gyro. Later an alternate Diego appears wielding a stand that looks similar to The World.
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