Alucard's true identity is Vlad III Dracula, the historical Prince of Wallachia, infamously known as Vlad the Impaler. His tormented saga began in the 15th century when, as a young boy, he was sold into slavery by the Ottoman Empire and endured unimaginable brutality. Despite this, he clung to a silver cross, a symbol of his faith, until his inevitable execution. In a moment of ultimate despair and defiance, he renounced God, drank the blood of his war-torn battlefield, and willingly transformed himself into a true, immortal vampire, forever shattering the cross that once offered him solace.

Centuries later, he faced defeat at the hands of Abraham Van Helsing, the founder of the Hellsing family. Instead of being annihilated, Alucard was bound into servitude, becoming the Hellsing Organization's ultimate weapon against supernatural threats. Throughout his long imprisonment and subsequent service, he was subjected to extensive experimentation by the Hellsing family. These processes refined and amplified his vampiric powers, granting him immunity to many traditional weaknesses.

For decades, he remained sealed away by Sir Arthur Hellsing until his successor, Sir Integra Fairbrook Wingates Hellsing, awakened him. Integra's indomitable will and commanding presence immediately garnered his absolute, albeit peculiar, loyalty. Their bond transcends a simple master-servant dynamic; it's a profound, almost familial, respect forged from shared purpose and Integra's unwavering strength, which Alucard deeply admires.

His relationship with Seras Victoria begins when he saves her life by turning her into a vampire during a mission. He assumes the role of her reluctant, yet undeniably effective, mentor, constantly pushing her to embrace her monstrous nature. He frequently teases, provokes, and even torments her, but beneath his cruel exterior lies a strange protective instinct and pride in her development. He sees her as a testament to the human spirit—something he both despises and, ironically, yearns for.