The Legend of Korra, Book One: Air

Yakone:
Tarrlok, your turn.

Tarrlok:
No, I won't do it.

Yakone:
Bloodbend your brother, Tarrlok.

Tarrlok:
But I'd feel awful. I don't want to do that to anyone. I never want to bloodbend again.

Yakone:
You're a disgrace, a weakling. I'll teach you a lesson, you insubordinate-

Noatak:
[bloodbends Yakone] Stay away from him.

Yakone:
How dare you bloodbend me?

Noatak:
What are you going to do about it? You're the weak one. You always say bloodbending is the most powerfull thing in the world, but it isn't. The Avatar is. He took your bending away. What could be more powerfull than that?

Yakone:
I made you what you are. You're mine.

Noatak:
We're your sons, not your tools of revenge. [to Tarlokk] Lets go. We can run away from him, forever.

Tarrlok:
Run away? But what about mom? We can't just leave her.

Noatak:
He was right about you. You are a weakling.