The Doctor

The Doctor is the mad genius standing behind the creation of Nazi artificial vampires. Doctor usually dressed in a bloodstained white lab-coat, an unusual punk shirt which reveals his stomach, and glasses with adjustable lenses. Also, he seems to have his 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 and is dedicated to the same insane plan of endless world war, although he is not much of a fighter.

Hirano has stated that Doctor created Schrödinger, which goes well with his 'mad scientist' reputation. (There are also some rumors that the prototype of The Doctor, especially his clothing, was inspired by Rammstein member "Flake" (aka Christian Lorenz), or maybe it is the other way around. Both have similar nicknames (Dok and DOKtor) and similar dress styles).