Dead Apostles
In this world, there exist beings known as vampires. They are divided into those who are vampires from birth, called True Ancestors, and those who were originally human but became vampires through some means, such as having their blood drained by one of the former. The latter are known as Dead Apostles.
Among them are individuals who became Dead Apostles after being fed upon by other Dead Apostles, as well as those who deliberately transformed themselves into Dead Apostles after pursuing magecraft to its extreme. Their abilities, which surpass those of humans, are nevertheless only an extension of human potential. Freed from the constraint of lifespan, they gained their abilities only after the passage of countless years. In other words, if humans were to possess lifespans measured in thousands of years, anyone could theoretically attain equivalent abilities.
Heroic Spirits are shadows cast by human history, born from humanity’s affirmation of the order of the human world. In contrast, Dead Apostles can be described as shadows cast by the Earth, born from the denial of the human world. Because of this, Dead Apostles are able to negate the protection of Noble Phantasms created by humans, as well as those forged by gods for the sake of humanity.
Defeating them requires powers different from those of Servants, such as specially consecrated weapons, Mystic Eyes, or individuals who possess singularities like Demonic Beasts.