Perseus Achilles Jackson: Son Of Many

Stunned pt 2: To Whole New Pantheon I Go(Welcome to the Norse)

Note: After much thought, I decided not to make End the villain but rather to introduce another Pantheon in form of the Norse gods as well as a bit of the Marvel Movie Universe. Furthermore, in case ignore the events of Thor 2: The Dark World. Plus for this story, Loki being the god of Magic, Mischief and Lies created the Alien race of the Chitauri.
Appearing in his Cabin, all seven women pried End off of him, soon they were followed by his mothers. None of them looked happy, especially at the thought that the woman who had tormented their son's life and thrown him off his game was now in his room claiming to be his long lost wife, something that was totally absurd to them.
Chaos would have lunged at her in order to beat the crap out if she was not restrained by the others.
Not waiting, End began to tell them her reason for being there while still clinging to Percy.
She said that the leader of the Norse gods, Odin had reached out to her while he was in the Odin sleep, in a desperate move saying that his son Loki did not want to cause Ragnarok the way he usually does, instead he wanted to kill him then reshape the realm in his own image. Since he is the head of the Norse gods, killing him would disstabilize the realm causing them to fade away completely leaving only him, Surtur and Hel. Then he would reshape the realm in his own image.
That is while she may the alter ego of Chaos charged with the domain of Destruction she would not want to see the end of an entire Pantheon.
Thus when he asked her for help, she had to find a strong person who would strong enough to come to the aid of the Norse gods. In other words, the debacle with Order had been carefully hatched as a test which he had passed with flying colors.
The next step was to honor Odin's request because his eldest son Thor was down on Earth serving punishment for violating the peace treaty they had with the Frost giants and also to learn some humility. Thus there was nobody to keep an eye on Loki. Hence for the time being, until things were sorted out properly, Percy Jackson would have to go to the realm of the Norse gods and stay there to keep an eye on Loki. He would interfere if things went south.

Perseus Perspective (While watching Loki and other events) Note: since he was not an Asgardian, he could not interfere according to the terms of the agreement.
By this time the Warriors Three and Lady Sif have traveled down to Earth in search of Thor to bring him back.
To stop them, Loki sends the Destroyer to kill them.
Thor now realizing that his father was teaching him to be a good and kind King who valued the lives of all races as well as not abuse his power, willingly gave himself up to die in place of his friends. But he would not die this fateful day as that was the sacrifice needed to regain his power.

1. He stole the ice casket, then he froze Heimdall when he tried to stop him, thereby allowing Laufey to enter Asgard.
Meanwhile Heimdall upon hearing Thor's persistent calls was able to gather enough strength to break out of his ice prison and bring all of them back(Including Jane Foster, who in this timeline after all she had experienced would not part with Thor. Rather she followed them to Asgard helping the others take care of a weakened Heimdall then proceeding straight to Odin's chambers, of course, in the commotion nobody would notice her to ask why she was there)
Armed with a sword made of Uru metal, Silver, Gold and steel, she viciously cut down any Frost giants that stood in her way.
2. When Laufey tried to kill Odin, Loki killed him proclaiming that he was a son of Odin
3. Then Thor and Jane bust in weapons drawn. Seeing his mother he revealed Loki's treachery causing her to faint from the shock of the news. Loki used that chance to escape intent on destroying the Frost giants.

Seeing all this, Percy Jackson revealed himself telling Thor to go handle his brother while they took care of his parents and dealt with the remaining Frost giant army. Thus off Thor went.
Leaving Jane Foster to guard Odin and Frigga, Percy Jackson aiding the Asgardian generals wiped out the offending forces not leaving a single one alive.

As for Loki, Thor found him on the Bifrost, their ensuing fight shattered the Bifrost thus destroying the bridge to Earth. As a result Perseus and Jane Foster were now trapped in Asgard. In
the eventual confrontation, Loki chose to apparently fall to his "death" when Odin refused to acknowledge everything he did to gain "relevance" in his eyes.
Using his domain of Fate, he saw that Loki was not dead, rather he had fallen into a black hole, therefore this would not be the end.
From what he could see, since he could not lay his hands on the throne of Asgard he set his eyes on taking over Earth.

A Year Later
The Bifrost was repaired and Odin set Thor with the task of bringing back Loki to Asgard to answer for his earlier crimes. Meanwhile SHIELD as led by Director Nick Fury had captured Loki after an altercation with the newly formed Avengers team in Stuttgart, Germany.
Earlier he had enslaved Dr Erik Selvig and SHIELD agent Clint Barton after an experiment conducted on the Tesseract in an undisclosed government facility in New Mexico, opened up wormhole, allowing Loki to finally get to Earth from his home in the black hole.

With the aid of Captain America recruited by Natasha Romanoff.
Dr Bruce Banner recruited by Phil Coulson and Tony Stark recruited by Director Fury himself; he was subdued and was in the process of transported to the SHIELD Helicarrier via the Quinjet when they were intercepted by an enraged Thor who was followed by Percy on Odin's orders.
After a brief fight that ended in a stalemate, all participants returned to the Helicarrier and the return was not pleasant either.

One thing led to another and Tony Stark billionaire genius, playboy and owner of Stark Enterprises who was known for his big ego decided to get into a fight with Captain America; insulting him that "Everything special about him came out of a bottle".

The Captain in order not loose his temper left the room to clear his thoughts. Shortly, he was followed by Thor who after the earlier fight had found another Kindred spirit in the Captain as he had in Sif and the warriors as well as Perseus.