The release of the first full trailer for Marvel's Avengers: Doomsday has propelled the Disney+ series "Loki" back up the streaming charts, cementing its status as a crucial piece of the Marvel Cinematic Universe's ongoing saga. The series, which follows Tom Hiddleston's God of Mischief, is being highlighted as essential viewing for fans preparing for the upcoming Avengers film.

"Loki" chronicles the transformation of its titular character from a villainous prince in the early MCU films to a hero navigating the complexities of time and the multiverse. The show begins by exploring Loki's origins as an adopted Frost Giant prince, his descent into villainy in "The Avengers," and his evolving relationship with his brother Thor across subsequent films. His story takes a significant turn when a variant of Loki escapes with the Tesseract during the events of "Avengers: Endgame," leading him into the path of the Time Variance Authority (TVA).

Within the TVA, a bureaucratic organization existing outside of time, this Loki variant confronts the consequences of his past actions and the death of his original counterpart at the hands of Thanos. Presented with the choice of being erased from existence or aiding the TVA against a multiversal threat, he chooses the latter. This choice leads to a buddy-cop dynamic with Owen Wilson's Agent Mobius M. Mobius, driving a narrative that explores Loki's redemption arc.

Hiddleston's performance in "Loki" is central to the show's success, offering a complex portrayal that allows for exploration of gravitas and pathos, and even featuring one of the MCU's more endearing romances. While the initial plot involving the TVA might seem unconventional, the series ultimately builds towards a confrontation with Kang the Conqueror, a narrative thread that was continued in "Ant-Man and the Wasp: Quantumania."

Owen Wilson as Mobius and Tom Hiddleston as Loki in Loki, season 2.

Season 2 of "Loki" delves deeper into an increasingly unstable multiverse, with the Asgardian god finding himself unstuck in time. The story continues to feature Kang variants, particularly Victor Timely, an inventor from the 1860s, as Loki races to avert a temporal catastrophe. The season concludes with a profound revelation about the multiverse's nature, positioning Loki as a key figure within it. This resolution provides a satisfying end to his redemptive journey, regardless of shifts in Marvel's overarching plans, such as the reported change in the focus from Kang to Doctor Doom.

Loki sits holding together the various timelines of the MCU

Both seasons of "Loki" are considered vital for understanding the MCU's multiverse foundation and Loki's personal growth. The series successfully transforms the God of Mischief from one of Marvel's earliest villains into a character with a "glorious purpose" within the expansive cinematic universe.