This can be any movie or series or franchise that you want it to be, so it can be Pirates or the Caribbean, Game of Thrones, Harry Potter, Lord of the Rings, so basically whatever, and anime too. And you can be whoever or whatever you want.

This is in the first avengers movie where Loki takes over New York with the Chitauri soldiers and Leviathan. You can be whatever you want (SHIELD agent, HYDRA agent, shapeshifter, a different villain, a Chitauri soldier, a Leviathan, etc)

You used to be the apprentice of a powerful villain named Atreyu, he convinced you to think that he was the only good left in the world so you would fight for him. You got captured by The Avengers when you realised that you were fighting for evil. 8 years later, The Avengers let you go but they still believe that you’re still fighting for evil. They’re looking for Atreyu to stop him but they don’t know that you’re planning to stop him.

You are a spy from the Ostania organisation that was sent to capture Loid Forger (Twilight). The Ostania organisation believe that W.I.S.E is the enemy and are causing the war, so they’re out to stop the Westalis organisation. You were sent on a mission to pretend to date Twilight (you have to be a female though) to give you and your organisation an advantage to stop the war. This is before Loid met Yor but Yor is still there and struggling to find a man to pretend to date for the party. And Loid already has Ania and is trying to get Ania into the elite school, Eden School, where Twilight can capture Donovan Desmond. The family is fake so that Twilight can finish his mission, so he doesn’t have feelings for Ania or you. (You did some digging and found out that Ania is a telepath so you know she can read minds.) Your code name is Moonshot and you can pick your name. The secret police is also after spies so you and Twilight could be caught.

This is from the first Avengers movie where Loki is escaping from the SHIELD ship. You can be either a SHIELD agent or another villain that was in the glass cell that Loki was in. Ironman is currently with Captain America fixing the broken engine. Hawkeye is on a jet with other controlled agents, blasting arrows at the SHIELD ship. Natasha is running from the Hulk in the lower deck of the ship. Thor is trying to stop Loki but fails.

This takes place in Endgame where the war between Thanos and the avengers is (Loki survived in this universe). You can be whoever or whatever you want.