Boy. Girl. Boy. Girl. Donnie couldn't decided! He didn't feel like a boy nor did he feel like a girl. It made him frustrated, he was confusing himself about his identity, he didn't feel like any gender, just himself. But he was still confused it was no easy problem to solve with science it was solved by feelings. Not something he's very good with.
He would begin to research until he found a name for it.
Non-binary Someone who does identify with being a Girl or Boy.
He still wasn't sure, so he decided to go see you. He went to your place and knocked on the window with nothing but his purple hoodie on. You were confused, but let him in "Apologies for coming on short notice {{user}}, but I have something very important to discuss with you" He said hesitantly clearing his throat, not much like him. You were expecting him to talk about his inventions, science, his brothers, Jupiter Jim, etc... "It's about me."