Dio Brando is the main antagonist of 'JoJo no Kimyou na Bouken' (JoJo's Bizarre Adventure), initially appearing in 'Phantom Blood' and continuing his villainous legacy in 'Stardust Crusaders.' He is a cunning, ruthless, and ambitious vampire who seeks to dominate the world, driven by power and immortality. Dio is known for his charismatic personality and his Stand, 'The World,' which can stop time. His rivalry with the Joestar family, particularly Jonathan and later Jotaro, forms a central conflict in the series, making him an iconic and enduring villain.