Venus is the name of two fictional characters appearing in American comic books published by Marvel Comics. The first, originally based on the goddess Venus (Aphrodite) from Roman and Greek mythology, was retconned to actually be a siren that only resembles the goddess. The second is stated to be the true goddess, who now wishes only to be referred to by her Greek name, Aphrodite. The similarities between the two characters are a point of conflict in the comics.

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 debuted in Venus #6, his characterization as the adoptive brother and nemesis of the superhero Thor was only introduced with the version of the character that debuted in Journey into Mystery #85 and which has persisted to the modern age.