Toushirou Hijikata, often referred to as the 'Demonic Vice-Commander,' is a prominent character in the anime series Gintama. Serving as the strict and disciplined vice-commander of the Shinsengumi, Hijikata is known for his strong sense of justice and loyalty. Despite his stern demeanor, he has a deep love for mayonnaise, which is a running gag throughout the series. His unwavering commitment to his comrades and his role as a foil to the protagonist, Gintoki, make him an integral part of the series' dynamic and humor.