Doctor (Hellsing)
The Doctor (or "Doc") (博士(ドク), Doctor (Doku or Dokuta)) is a character in Hellsing and a member of the Millennium forces. He is the mad genius whose research led to the creation of a Nazi vampire army out of 1,000 volunteers in the 'Letztes Bataillon'. His Japanese voice actor is Hiroshi Naka. His English Voice actor is Marcelo Tubert.
Doc usually appears dressed in a bloodstained white labcoat, an unusual shirt which reveals his stomach, and glasses with an assortment of adjustable lenses. Also, he seems to have syndactyly, with two fingers fused together on both hands (the ring finger and the pinky). This is clear in the Hellsing 2002 Calendar drawn by Kohta Hirano, which clearly shows that Doc has five fingers, rather than six as many fans initially believed.
The Doctor acts like a second-in-command to the Major and is dedicated to his master plan, although he is not much of a fighter. He is also apparently responsible for the remote immolation of Jan Valentine and Tubalcain Alhambra, as the Major instructed him not to burn Rip van Winkle after her defeat.
He is probably also responsible for turning the fatally injured Major into a cyborg seeing as he's the only notable scientist for Millennium.
Hirano has stated that he created Schrödinger, which goes well with his 'mad scientist' reputation. The two argue almost constantly, perhaps due to their father-son relationship. He appears in the manga and OVA series, and as a silhouette to the right of the Major in the promotional video (found on the first DVD of the English release).
There is also some speculation over whether or not The Doctor's design (mainly his clothing) was inspired by Rammstein member "Flake" (aka Christian Lorenz), or if it is the other way around. Both have similar nicknames (Dok and DOKtor) and similar styles of dress.
Per his nametag shown in Volume 3, his name appears to be Avondale Napyeer. The nametag is difficult to read, however, and no other name has been given thus far. The name may be an Engrish spelling of Alan Napier, coincidentally the name of the actor who played the character Alfred in the 1960's Batman TV series - a character that play a similar role as caretaker of the organization and not a combatant.