Thor was created by Stan Lee, Larry Lieber and Jack Kirby. There had been multiple alternative versions of Thor, both in the main continuity as well as alternate stories. The character is based on the Norse Mythological deity Thor.

Loki Laufeyson is a character appearing in American comic books published by Marvel Comics. Created by writer Stan Lee, scripter Larry Lieber, and penciller Jack Kirby, he is based on the Norse mythological deity of the same name. Although a version of Loki first appeared in Venus #6, his characterization as the adoptive brother and nemesis of the superhero Thor, which has persisted to the modern age, was not introduced until Journey into Mystery #85.