Revealed
Immediately from the Bifrost, Loki is taken to the court room where he trailed for attempted genocide, destruction of the Bifrost, and the attack on Midgard. He was in his chains and muzzle when Odin Allfather approached him.
"Loki Luafeyson. You are convicted of attempted genocide, the destruction of the Bifrost, and the attack on Midgard. You will be tried in this court today. And your fate will forever hinge on this day. What do you say?" With that Thor removed the muzzle on Loki's face and Loki just smiled. He smiled and laughed. Then he said, "I regret none of my actions. I only hope that people would recognize me, and ohh they have." He laughed. The people of Asgard talked and mumured their thoughts.
Odin sat their in contemplation of what his son had become. He slammed Gungir to the ground and all the Aesir fell silent. Loki looked at Odin remarked, "How does it feel to lose one of your sons? Oh wait. I never was your son, so you didn't actually lose me. Nevermind. Hehe. You know-"
In the middle of Loki's oh-so-grand speech, a big black portal appeared. Right above the Aesir heads. They screamed and tried to run but the doors were all locked. The Avengers fell into a defensive position and ready for another Chitauri attack. Of course it wasn't the Chitauri. The Avengers defeated the all back on Earth.
The guards and Avengers were ready for attack. But it wasn't the Chituari who stepped out of the portal, it was a tall pale man. His black hair went down to his shoulders and green emerald eyes. He wore armor just like Loki's except it was completely black and look way the hell more comfortable. His figure was skinny and tense with an antcipated attack. He looked starved and looked like he went to hell and back. Cuts and dried blood were on his face and hands. That's all the places they could see after all. He lunged at Loki and screamed,
"I AM GOING TO KILL YOU!!!"
He screamed with the rage of a monster and ferocity of a hungry wolf. He punched, kicked, and beat the crap out of Loki.
Nobody moved, stuck the floor in shock. They were so shocked that even the Black Widow couldn't keep her face blank.
The man was what they were shocked for. They were shocked because, well, the mystery man was another Loki.
After 'dealing' with the other Loki. Loki who came out of nowhere stood up and spit on the Loki who attacked Earth. He spoke, "I hope you burn in Hel monster." With that the illusion of the beat up Loki vanished, leaving a dead Chitauri soldier in his quake. Loki kicked it to make sure it was dead and turned around.
He ran his fingers down his greasy hair before he realized were he was. His eyes went wide, and he went tense. He gave an easy smile and said, "Oh. I am in Asgard." He looked back on the Chitauri he just brutily attacked, "Ok. It is not what it looks like."
Tony was the first to break out of stupor, "What the fuck!"