Leif aka Huger

レイフ aka ハガー

Leif, also known as Huger, and his girlfriend Jessica were a pair of low-level young vampires who were misled into believing they could achieve immortality by murdering 13 random families along a road. They succeeded in killing four families before encountering Hellsing operatives, much to the couple's surprise.
In the Hellsing manga, the vampire boyfriend's name was never mentioned, so various adaptations used different versions: in the Hellsing TV series, he is referred to as "Leif" multiple times, whereas in Hellsing Ultimate, the character's name is never spoken aloud but is listed as "Huger" in the end credits of episode one.