I'll be adding 3 people to the story but you'll have to wait to meet them . She'll be his 4th and last harem member. And his harem will be, ruby, weiss, neo and the 3 oc and you'll find out more as the AU goes on.
I even jokingly thought about Predator universe,it was funny thing.But again on a serious note any particular universe that you guys are interested in like Underworld or something along that lines.