The Iscariot Organization is a fanatical religious organization and rivals to the Hellsing Organization. Their purpose is to kill all demons and heretics. The members of this cult are called "The Foil". They all display a violent nature, a religiously zealous mindset as well as psychotic tendencies for bloodshed in the name of God. They have existed centruries before Hellsing has (possibly since the dawn of Christianity) and unlike Hellsing they kill Vampires because of what they are regardless if they are a threat or not. If the Hellsing Organization is Anglican (Protestant) then the Vatican is Catholic which acts as another reason for their animosity. The Iscariot organization is also well funded due to their well connected ties with the Vatican as well as the Pope.