Well maybe trans, if we consider some of the aliens, but turning back the clock, sci fi has been responsible for some of the most forward thinking tv in history. Mixed racial kisses - Star trek! Russians working with americans on the same side - Star trek !(and WW2 of course). The twilight zone was responsible for a lot of forward thinking stuff too. But Rod Serling was a homophobe who made public videos talking about gays like they were pedos. http://www.youtube.com/watch?v=mkzSVR2Oqck And gene roddenberry took a while to see LBGT as part of the larger civil rights struggle, pushing the idea of gay couples into TNG, just before he died. So in the future we are left with no gay humans of any kind in all the federation and only one bunch of androgenous aliens and some "old man in girl on girl" action on DS9 to go on. Am I gay? Nope. Do I think graphic representation of homosexuals on a childrens program is questionable? Maybe, but less so frankly as time goes on. Should we have shows set in the future, that creates a world this big and has zero even in mention of LGBT? Of course not. Its silly. Sci Fi and ST has a long history of addressing issues and isms. Its one of the hallmarks and value claims of Sci Fi. Yet its painfully absent from Star Trek.