Much of Castlevania's quality can be addressed by looking at its creators. Warren Ellis, like George RRRRR Martin is a fat leftie gamma male (who might have a high intellect but has too big of a chip on his shoulder to be an alpha or sigma) who has a grudge against his own heritage and its traditions that he extends to "humanity" (which is a spook). Best demonstrated in Supergods where he has an tuedgy4yu tirade about how religo is bad and so are humans for having it. Another is a shitskin with an obvious disdain for Whites. Since neither of them ever belonged amongst the White Man, both make the "heroes" the outsider, the outcast, the gamma, the stronk womyn.
Ellis' worldview is tied intimately to his own classification among males. Which would be very low absent of obfuscation amongst women made possible by industrialization. Ellis does not accept honor and loyalty to one's heritage since he was always the outcast, on the outside looking in (possibly thank s to being shoved towards too many lockers). He in turn manifested a deep gamma rage directed at his own culture's norms and traditions.