When an earth shattering secret is revealed, all hope seems lost as the hero of Olympus sinks into despair, going into the shadows where he is content to remain for the rest of his life. But the Fates are cruel, and the once-hero is once again drawn into a war. Yet in the midst of such turmoil, he may find a kindred spirit to weather the storm with.

(AU) The EATH was a terrible place made for testing and experimenting on animals. North, Aster, Tooth, and Sandy are a group of animals that are test subjects there and when a new animal comes they try to befriend them. Jack is a fox kit that has just arrived at EATH and he constantly has his guard up. Can they make Jack trust them and become comfortable? (Full summary inside)

The last thing Jack ever expected was to go straight through the windshield of a falling jet, or for the super soldier inside to see him. He also didn't expect to accidently freeze them both and lay unconscious in the ice for seventy years, or to be offered the chance to be trained by SHIELD when he awoke.

"The child I am to give you, was born of the Spirit World, and therefore is linked to it by birth, when the time comes the child will eventually have to return the Spirit World and leave the mortal world forever...I am sorry Sokka, but these are my conditions" AU is in Avatar universe but before legend of korra