Board Thread:General Discussion/@comment-28096256-20160413001736/@comment-27392440-20160513002857

There's a higher chance that Lillynette was the original hollow in my opinion. She barely had any powers but when you realize a shinigami would lose most of their powers if their zanpakuto spirit was separated from them then Lillynette's being the weaker implies she might be the original with the externalized spirit having most of the power plus in the flashback where they first meet she seems more aware of their situation (just because the resurreccion looks like Starrk, that doesn't mean much considering hollows naturally wear not the original human self but the hollow's form, I think something like that is why the release looks like Starrk).

Also Ulquiorra is established as a natural area car so it's highly likely the hogyoku wasn't used on him either.