Incognito

インコグニート

Incognito is a masochistic vampire from "the dark continent," a reference to Africa. Although physically androgynous, he is generally considered male. Extremely powerful, he combines dark magic with an enchanted ArmsCor 40 mm grenade launcher that fires spines. Incognito vomits into the launcher's cartridges before loading them; he is also known to carry a gatling gun as backup.
During the series' final plot arc, he summons a snake-like being referred to as Set (presumably the Egyptian god of chaos) and takes it into his body to use its power to attack Alucard. Incognito possesses regenerative powers that seem to be related to the purple stripes and sigils covering his body. It has also been argued that, while Alucard may be inspired by—or is—Count Dracula, Incognito may have been inspired by the vampire Count Orlok from the 1922 silent movie "Nosferatu: The Vampyre."
Incognito does not appear in the manga, and his name comes from the literal definition of the word, incognito. Alucard also states in episode nine that Incognito is an anagram.