Incognito

Incognito is a masochistic vampire is from "the dark continent," a reference to Africa. Though physically androgynous, he is generally thought to be male. He only appeared in the anime and serve as its main antagonist.

History
Incognito first appeared when Alucard sensed his presence when he first arrived in England, he eventually occupied a castle and performed a ritual on an unidentified man. As Hellsing forces arrived and raided the castle however the SAS's 22nd Regiment arrived in their Counter Revolutionary Warfare (CRW) gear and ordered Hellsing forces to move out, but despite this, Alucard still continue to investigate the interior part of the castle. He ordered a Baobhan sith named Bubbancy to turn Integra Hellsing into a vampire, he began to overwhelm the SAS forces with the help of his dark magic, he then meet Alucard face to face and had a brief battle as Alucard had learned of the danger Integra was in and rushed back to the Hellsing manor, meanwhile he converts the SAS into vampire monsters and took over the Tower of London. The Hellsing commandos reached the Tower of London

Abilities
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; and he also is known to have a gatling gun as backup. During the final plot arc of the anime series he summons a snake-like being referred to as Sett (presumably the Egyptian god of chaos) and takes it into his body in order to use its power to attack Alucard. Incognito has regenerative powers which seem to be related to the purple stripes and sigils covering his body.

Trivia

 * It has also been argued that, while Alucard may be inspired by, or is, Count Dracula, Incognito may have been inspired by, or be, the vampire Count Orlok, from the 1922 silent movie Nosferatu.
 * Incognito does not appear in the manga (although he has a small camio in OVA 2) and his name comes from the literal definition of the word, "incognito". In episode nine, Alucard responds to Incognito's introduction by saying his name's "quite an enigma as well."