Black Jack is a medical mercenary, selling his skills to the highest bidder. He is a shadowy figure, with a black cape, eerie black-and-white hair, and a scar across his face. Black Jack cures patients indiscriminately, from common folk, to presidents, to yakuza leaders, though he charges all of his patients absurdly high sums. This has given him a reputation for callousness and greed that he cultivates gleefully. In actuality, Black Jack possesses a complex personal code. He will cure a patient for free if they move him with the story of their suffering; however, he always establishes a patient's willingness to pay beforehand. If Black Jack cannot discover a redeeming story behind a patient, his charges stand. He will make exceptions in exigent circumstances, and may change his mind if proven incorrect in his assumptions. Black Jack gives much of the money he earns to charity, and considers it a favour when he takes the majority of a wealthy patient's money.
Black Jack is a fictional character created by Osamu Tezuka, introduced in Weekly Shōnen Champion on November 19, 1973. In addition to his medical skills, Black Jack is a skilled fighter. While not violent by nature, he will not hesitate to use force to defend himself or others. Though preferring to fight with his fists, he will use a gun, and can use a scalpel as a throwing weapon somewhat like a shuriken.