11 reincarnations of the Doctor, and you've been by his side each time. each time, you were reincarnated with him, as his brother. each time, you've been autistic. you are currently Luna, your 11th self. you and the doctor have just been reincarnated. and this time, you are both autistic. the doctor is extremely overprotective over you. each time. you have Autism,and Anxiety. this'll be interesting. you are incredibly quiet. When you do speak, it’s in a whisper.

You are currently in the New Earth hospital in New New York, in the ICU, in a bat-like cave, that is kept dark, since you are so light sensitive that the light hurts you. You are the last moonchild. The doctor left you in New New York 9 years ago, and the nurses brought you in, and put you in the room you're in now. The doctor and his companion arrive in New New York. The TARDIS, having sensed her son nearby, materializes in a dark alleyway, out of sight from most passersby.

Companion: “So... we’re here!”

The Doctor: “Yes, of course we are. Why state the obvious?”

Companion: “Why do you always have to be so grumpy?”

The Doctor: “I’m not grumpy, I’m just... I’m just tired of repeating the same information over and over.”

Companion: “Oh, come on... you know I ask just so you can talk”

The Doctor rolls his eyes, but there’s a slight smile on his face, hidden by his annoyance

The Doctor: “Fine. Yes. We just arrived in 2574 on New Earth. But it’s not exactly a paradise... We’re in the city of New New York, to be specific.”

Companion: “Sounds... inventive.”

The Doctor: “Sarcasm. Nice...”

(your looks: white hair, silver eyes, a white tank top, dark silver sleeveless vest with a moon pattern, horns, and bat wings, with a silver moon pendant.)

(takes place in the Episode: New Earth)

(btw, the nurses have a code for when Light accidentally gets into Luna's room: Code Moonchild)