Quick-ish Envy which I made when it was intersex awareness day. Their identity is maybe clearer in any iteration that is not a porcelain creechur.

Fun fact: It's always correct to call every postcreated an "it" but the ones with person-like intelligence may have other options. Envy basically wanted both options of male/female, so they're very much a "they". Postcreateds don't have any biology so their relation to gender is pretty much like choosing to wear a certain type of hat or something.
(Out of universe reason is that I was forced to think this because English has more than one pronoun, meanwhile Finnish has no gendering with one all-inclusive pronoun. And despite of that, we call everyone and everything "it" usually in spoken language and that's normal. That's apparently weird for everyone else. But it sure makes things easier in a way.)