Mjolnir (comics) owned by Thor
Mjolnir, known more formally as Mjölnir ()  is a fictional magical weapon appearing in American comic books published by Marvel Comics. It is depicted as the principal weapon of the superhero Thor. Mjolnir, which first appears in Journey into Mystery #83 (Aug. 1962), was created by writers Stan Lee and Larry Lieber and designed by artists Jack Kirby and Joe Sinnott.
Mjolnir is typically depicted as a large, square-headed gray sledgehammer, with a short, round handle wrapped in brown leather, culminating in a looped lanyard. The object is based on Mjölnir, the weapon of the mythological Thor.