i based cain off of the bible, various lore, and marcus pierce from lucifer. lucifer also has eve: https://lucifer.fandom.com/wiki/Eve. i'd love for eve to be based off of the bible/lore/lucifer.
fun fact: i used lore that cain is actually lucifer and eve's child instead of adam and eve's. the lucifer player at prophets agreed to it, so there's that.