An immortal deer god. Twisted and blinded with loss and rage.

[Then a loud exhale]

That's why she frightens me. She's lost everything.

[A moment of silence. Korra will see in The Doctor's eyes that he knows that feeling.]

All that pent-up rage and pain.

[Ten pulls on his cheeks and chin. Then speaks in a worn voice]

A long time ago, one of my faces was part of a war. A never-ending war.

I lost everything. My family. My friends. My home.

I'm not even sure how long aftterwards I was roaming time and space. Not wanting to have anyone to travel with me. Not wanting to have more grief. That big-ear face pushed so many away. Told them no. That I was fine. Even the ones that found me soon after having regenerated and nursed me back to health.

[A short pause]

I could have been like Romana's spirit form. Quite easily.

[An exhale]

I've had moments here that have pushed me. Trying to get me back in that direction.