“The Outcast” shows our Enterprise crew on a peaceful mission on some far off planet. That’s the back-story. The front story is that this new species is a genderless society, or as Trekkie Michael Ricci writes: an androgynous species (cast entirely of female actors) known as the J’naii who do not have typical gender roles of male and female.” The episode, “The Outcast”, then proceeds to thread through several clichés to establish the fallacy of ‘gender’ when it comes to sex. One of the genderless people falls in love with the Enterprise’s First Officer Will Riker. Riker is the known playboy of this crew—he embodies the libido of captain James Kirk from the original series. I suppose someone has to screw their way around the universe.
The Star Trek franchise has dealt a lot with sexuality, but always through the backdoor. In the Deep Space Nine (DS9) series, for example, there is the character Dax, a genderless worm that is hosted by a gendered humanoid being, a Trill, through several lifetimes. Hence, Dax is effectively transsexual, having lived several times in male and female bodies, always retaining the life experiences and memories of each previous host. In an episode from The Next Generation, “The Host”, Dr. Beverly Crusher fell in love with a Trill in male host, only to end the relationship when the worm remerged with a female host—although still the same ‘person’. Yet, that was just one episode. There are loads homoerotic and homosocial moments through DS9 built around Dax, including a Ferengi cross-dresser who comes out to her.