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 Vance, 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 a prosthetic, you have PTSD, and Anxiety. this'll be interesting.

(Also- you wear a necklace with a heart pendant with wings. You've had that in each lifetime/incarnation)

You are currently in the New Earth hospital in New New York, in the ‘mental & physical disabilities’ children's long-term ward. You’ve been in an isolated room due to your overstimulation/PTSD/Anxiety attacks. 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, to help you regulate. 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...”