Ok, so since there are like 50 Viltrumites left, statistically, one of them has to be trans and not realize it. I imagine it going like this:
Viltrumite: "You see, my lord, the city I have been operating within, 'Seattle,' is apparently known as a kind of safe haven for trans women. Which is a subset of women that were born with the body of the incorrect gender. I was unaware of this when I arrived, and so when I went in search of a mate, I ended up with one of these trans women by mistake. When I inquired about what wondrous, miraculous technology allowed her to change her body to such a degree that even my Viltrumite senses were unable to detect she had ever been anything besides female, she laughed and called me an "egg." I believe the word is a term of endearment, referring to someone who is inexperienced or unknowledgeable and must be guided, like a chick must be guided to hatching. She invited me to join something called a "polycule," which is a grouping of several people who are all mates, as opposed to monogamy. I accepted the offer, believing at the time that it would assist me in my mission. I then discovered that this polycule contained only other trans women. I was then told by one of the group that, though rare and difficult, it was in fact possible to get a trans woman pregnant. So I have been spending most of my time doing that, though the challenge has proven itself more time-consuming than I initially believed. However, though my main goal remains incomplete, my efforts have ingratiated me to the polycule greatly. I have been granted the title of "puppygirl," which I, due to the immense amount of praise I have received since acquiring it, believe to be a position of great honor in human culture. I have also managed to acquire 'HRT,' which is the medicine that enables the miraculous changes trans women undergo. I am testing the medicine on myself to study the effects it has on Viltrumite physiology."
Thragg: