5000 years ago:

"We have no choice," the man in orange and red robes said. "We have to create an emergency Avatar. The rest of the incarnations and we are just lucky that we can depend on another power source."

"I knew that girl would never be ready," the man in white robes said. "She was too arrogant. Her pride got her killed!"

"Peace, Aang," calmed the red robe man. "The past is in the past. We must focus on our task. Who do we pick for being the Avatar?"

"How do I know? I'm not Raava," said Aang, sulking.

They both fell into silence.

They were in a cavern, hiding from the storm. The giant hurricane had raged for 2 months and had killed all the benders in the world who had tried to stop it, which was everyone. There was not one bender in the world. The two men themselves, being the most powerful benders in the world, couldn't stop it.

"Maybe we can put together random letters," suddenly said the red robe man. "Then, whether he or she exists right now, or in the future, the person with that name will become the Avatar."

"Roku, what are you talking about?" exclaimed Aang. "You're just going to leave it to chance? The Avatar Spirit used to choose. And she chose well. Except for the last Avatar. I will always hate that one."

"Aang, stop it. You're acting like a child. We should not hold grudges. That will bring us nothing. Now, I know that this is very risky. Raava is almost dead. Vaatu is thriving. We have to save Raava. She didn't bond with Wan for no reason. She wanted to save humankind. So do we. There is always a chance that that person is not good enough for it. If that happens, Raava will die, humans will die, spirits will die, and Vaatu will grow stronger. But there is a chance that it will be the opposite. That person might the best person for being the Avatar."

"So what letters do we use?" asked Aang. "We have to have a second name too because there might be two people who have the same name. The world's population might increase by that much, even though that probably won't happen."

"Don't forget that there are the other continents. No one knows about this, they only have the fake map. The only way someone will know this is the Avatar when he dies. Anyway, I have a name in mind. This has always fascinated me, having this name. It is a little bit weird. The name is -"

Suddenly, there was a huge boom, and the two robed men could feel a huge body coming closer to them. "AVATAR AANG! AVATAR ROKU! I AM COMING!"

said a booming voice that could be heard in all dimensions and worlds.

"Vaatu," muttered Aang. "We must go. Nowhere will be safe. We have to go out of China. We have to cross the ocean. Hopefully, he won't find us there."

"Let's go," Roku decided. "When we disappear, I will tell you the name. We can give the power to him there."

The two men suddenly started running toward the side of the cave. Just when they were about to hit the stone, they disappeared. They were now on the other side of the world.

The only thing that was left were these words on the side of the cave:

Nathan Stryker