I find it very odd that Loki's mysterious gap year between Thor and The Avengers is something that no writer since The Avengers has ever bothered to touch or explain? I get that this is the MCU and none of the writers really care about individual characters but Loki went into a wormhole and came out of it a year later with an entirely new motivation and a mysterious shadow boss, doesn't that intrigue anyone in the slightest? Why is Loki's presence in the Thor post credits scene never explained? What was he DOING there?
I know right! He shows up sometime after the movie in the post-credits scene looking a bit fucked up with a forehead injury and bloodied teeth (how much after, do you think?), and interestingly, he only shows up as a reflection. Yet he is controlling Selvig already. What the fuck happened there?
And in A1, he comes through the portal. Do you think he'd been able to reach Earth physically before, or was it all some projection long-distance thing until A1?