Creation Story
Loki’s canonical first appearance is Journey into Mystery #85 (October 1962). Stan Lee and Larry Lieber script; Jack Kirby pencils. This is the issue that establishes the Thor-adversary framework that every subsequent Loki portrayal draws from. Loki is positioned as Thor’s adoptive brother, a Frost Giant raised in Asgard by Odin, whose resentment of Thor drives his Trickster-god mischief. The framework has been canonical since.
The Avengers #1 (September 1963) established Loki as indirectly responsible for the formation of the Avengers: his scheme to attack Thor via manipulation of the Hulk brings together Iron Man, Thor, Ant-Man, and Wasp to fight alongside Hulk. The in-continuity origin of Earth’s Mightiest Heroes is a Loki scheme.
The Timely-era early appearance
Marvel’s predecessor Timely Comics used a Loki figure in Venus #6 (August 1949), a romance-adjacent anthology that occasionally featured Norse mythology stories. Stan Lee scripted; Werner Roth pencilled. The Timely-era Loki is structurally distinct from the canonical 1962 Marvel-616 character; it’s a mythological-story precursor rather than the Thor-adversary framework that subsequent Loki canon draws from.
Mainstream first-appearance discussions treat Journey into Mystery #85 as the canonical first. Some collectors track Venus #6 as a Loki early appearance for completionist purposes, but the cultural and collector-market center of gravity sits on the 1962 Silver Age debut.
The Kid Loki era
Kieron Gillen’s Journey into Mystery #622 (May 2011) launched the Kid Loki arc, widely regarded as the most critically acclaimed Loki comics run. After Loki’s death during the Siege event, he is reborn as a young boy with no memory of his previous lives. The Gillen run (Journey into Mystery #622 to #645, 2011 to 2013) uses Kid Loki to interrogate the character’s mythological framework and explores whether a Trickster god can choose to become something other than a Trickster.
The Kid Loki arc is the foundation for much of the MCU Disney+ Loki series’s character work and for Al Ewing’s subsequent Loki: Agent of Asgard run (2014 to 2015).
The MCU era
Tom Hiddleston’s Loki across Thor (2011), The Avengers (2012), Thor: The Dark World (2013), Thor: Ragnarok (2017), Avengers: Infinity War (2018), and two seasons of the Loki Disney+ series (2021-2023) is one of the most consistently-acclaimed performances in the MCU. The Hiddleston Loki draws from the Silver Age, the Kid Loki era, and Ewing’s Agent of Asgard framework simultaneously.
Collector context
Journey into Mystery #85 is the canonical Loki Silver Age key. High-grade CGC 9.0+ copies have crossed $15,000 at auction. The book’s value accelerated substantially with Hiddleston’s MCU performance and has held across the Disney+ Loki series.
Venus #6 (Timely 1949) is the early-appearance Timely-era key. High-grade copies are hard to find due to the low 1940s print runs; the book trades in the low-to-mid four-figure range and is collected primarily by completionists rather than canonical-first-appearance buyers.
Journey into Mystery #88 (first cover) is a secondary Silver Age key.