Going into Loki, fans are going to expect to see the god of mischief. Well, yeah, duh, of course we all expect to see Loki, right? But that’s not what we mean.
Loki is possible because of the events of 2019’s Avengers: Endgame. While Loki dies after trying to kill Thanos in Infinity War, in the follow-up, the Avengers go back in time to the Battle of New York in 2012’s Avengers,and they unintentionally let Loki get his hands on the Tesseract, which he uses to escape. So the version of the character we’ll follow in Loki will be one who just tried to violently take over Earth.
In other words, in Loki, we’ll be expecting to meet not a reformed villain but just a straight-up bad guy. You can definitely make the argument that by the time he dies in Infinity War, Loki has redeemed himself and become a hero. But that transformation takes both time and the experiences he goes through in 2013’s Thor: The Dark World and 2017’s Thor: Ragnarok. The Loki of 2012 hasn’t watched his brother mourn for him on Svartalfheim, lost his adoptive parents, or helped to save the people of Asgard from Hela. The lead of Loki will be full of nothing but venom and spite. If he’s to become anything like the hero who dies fighting Thanos, he’ll have to go down a different path to get there.