Dario Brando

Dario Brando (ダリオ・ブランドー) is a minor character appearing in the manga JoJo's Bizarre Adventure by Hirohiko Araki. He's the father of Dio Brando.

Personality
Dario Brando is portrayed as a greedy, alcoholic father. His desire for money was apparent after stealing from a man whom respected him to the point of forgiving his theft.

Due to this, he had presumably forced his wife to work to death and was hated by his own son. He also at some point asked his son to sell the dead mother's clothes in order to buy more booze. His alcoholic nature was shared with Dio, who hated himself for resembling his father after getting drunk.

History
Dario is a poor man in Victorian England who witnesses George Joestar I's carriage crash one day in 1868. Assuming everyone involved had died, Dario goes to loot the wreckage. In the process, he is seen by George, who is still alive. George mistakenly thinks Dario saved his life, and is very thankful to him. Dario then tries to make a profit from Mary Joestar's wedding ring, which he stole on George's carriage crash. He was eventually arrested and would have been sentenced to death for stealing from a noble, but George told the police inspector he actually gave the ring to Dario. George then asked Dario to become a good man and take care of his family. He then told the poor man that he understands his motives, as he too would do the same thing if he was born in poverty. Dario states that George gave him money which he used to start a hotel. However, business failed and he worked his wife to death, sending him back into poverty again.

Phantom Blood
Twelve years later, when Dario is on his deathbed, he sends Dio to live with George, as payment for George's debt to Dario. After his father dies, Dio spits on his grave.

Steel Ball Run
His Steel Ball Run counterpart, only known as Dario, is much younger in appearance, but maintains an even crueler personality, showing no qualms in throwing his own infant son Diego into a river to die. His fate afterwards is unknown, but it is implied that he was being sought by his son.

JoJo's Bizarre Adventure: Phantom Blood (PS2 Game)
Dario appears on the game's first cutscenes, similiar to the original story, as he gives his son a letter that will allows him to live with the Joestar. Other than that, after the third battle against Dio, the villian briefly mentions his father as he drinks an later meets the one who would become the first vampire seeing in the series.

Trivia

 * George mistaking Dario as his savior bears resemblance a similar scene in Victor Hugo's novel Les Misérables, in which Marius's father mistakes the corrupt innkeeper Thénardiers as his savior and sends Marius to seek aid from him on his deathbed. George also claims that he gave his ring to Dario Brando, who was imprisoned for stealing said ring, resembling the bishop Myriel claiming the same for Jean Valjean, who attempted to steal his silverware.
 * Of note is that Giorno Giovanna's favorite musical is Les Misérables.
 * If looked at carefully it can be seen that Dario has a tattoo on his chest of a cross with the words 'In memory of mother' visible on the tattoo.