<Snipped quote by Aix>Pretty in line with what I had. If you really want to use your character, you should go ahead. It is kinda weird that two characters are vampires, but with some justification it should feel fine. Like maybe there's various strains of vampirism (just like in Skyrim) and we get the idea that there's lots of undead in this world, which honestly would be a legitimate problem for the UEGNC since they would have their own people/soldiers (provided they're not all androids like Axel) turn on them. That would spice things up.
Basically the explanation I had with my character was that the populace believed he had achieved immortality through faith and mastery of rejuvenating holy magic. In reality he could not use holy magic to heal, as an undead creature cannot create life.
He did use it to summon a kickass pair of wings though.