What are the details?
Nebula spent the first 29 years of his life as a woman before transitioning into a male.
Several years after his transition, the barber shop receptionist is convinced that he is an alien.
Nebula has had his nipples removed in order to be more authentic, and regularly shaves his eyebrows.
"After coming out as transgender and believing I had finally found myself, I realized I was wrong. I wasn't male or female, or even human," Nebula told The Sun. "I don't think or feel like humans. I can't really explain it to others. I'm simply otherworldly."
Nebula noted that he did not feel comfortable as either gender.
"I know I'm stuck in a human form and that's how I'm perceived by others," Nebula explained. "But to me, I'm an alien with no gender."
He later added, "I thought being a trans man would solve all of my issues and inner battles with finding out who I was, but I wasn't as happy as I expected to be."
Nebula, who was diagnosed with Ehlers-Danlos syndrome, a rare condition affecting connective tissues in the body, said that he felt different from other people even as a child. He later said that he discovered he was agender, having no gender in particular.
"I'd always been obsessed with aliens, too, and what it means to be extraterrestrial, so the idea of being an agender alien fit perfectly as an identity for me," he added.
Nebula explained that many people in his family and circle of friends don't understand the alien identification.
"I don't expect them to get it, I only want acceptance," he added. "Who is anyone to tell you who you can or can't be? If someone wants to identify as anything, even an animal, let them."
Nebula is simply going to shake off any criticism he receives and continue moving forward with his life.
"I'm happy with who I am and will continue to become more alien-like every day," he said.