Keith Sexuality!
Summary: Keith sexuality as explained thru human geneticists and it is canon up until season 5.
Ok, first and foremost the introduction of Keith's mother has destroyed one of the best plot twists that the Voltron Universe had so far. So for the sake of the story being a hit and me not giving up my favourite plot twists Keith ether hast to only be a forth Galra or his mother is merely a very feminine member of the species ether works. For the sake of this argument, I am having Keith be haft Galra. Now some people might be wondering what this plot twist is that I'm talking about is. Well, my good readers, it is straightforward so here are a few points to think about:
1) The Galra are a mono-gendered race. This means that the Galra only have one gender. No males and females but simply Galra. This theory is supported by the fact that we never seen a pure-blooded female Galra. We know a lot of female haft-breeds, but that makes you think that having a gender is something that is picked up by their non-Galra parent.
2) Keith is the only know exception to this rule and has to do with his form. Keith is a human-shaped haft Galra that is male. To be blunt, this can't happen. To be as human-shaped as Keith is he needs a human X-Chromosome which he could have gotten from his father but if he did, then that means he got his male trait from his mother. Something that isn't possible to give as the Galra don't have genders.
3) This means that Keith is either a girl or he took on the Galra trait of being mono-gendered. Given that he claims to be male that leads the thought that the Galra is a type of mono-gender state is that of a hermaphroditic state. Meaning that the Galra have both genders or they don't have a gender outside of breeding time. If that is the case, then Keith's body may have settled merely until he starts to have his starts to menstruate.
4) Thus we come to the heart of the matter: Keith Sexuality. To be blunt Keith doesn't have a Y-Chromosome so him being attracted to males is expected. He has an X-Chromosome and whatever the Galra have for a reproductive genetic Chromosome. This means he will be mostly attracted to men but will also be able to be attracted to females if they interest him.
5) Conclusion. Keith is Bi with a leaning towards males if he is half Galra and his mother didn't use some method of space magic to conceal his true form.
