Moon Knight (Marc Spector) is a fictional superhero appearing in American comic books published by Marvel Comics. Created by writer Doug Moench and artist Don Perlin, the character first appeared in Werewolf by Night #32 (August 1975). Moon Knight has often been compared to DC Comics' Batman due to similarities between them: both are millionaire entrepreneurs that use their wealth to pay for the equipment used by their alter ego to fight crime. They are also expert detectives, and even use similar gadgets, such as boomerang-like projectiles (Batarangs for Batman, and Moonrangs for Moon Knight). However, there are some major differences between the two, such as the fact that Moon Knight uses multiple identities, and has superpowers (although he later lost them).
In the comics, Marc Spector is a former boxer, Marine, CIA operative, and mercenary, who found himself near death after being betrayed by his employer, Raoul Bushman, when they stumbled upon an archaeological dig, which Bushman intended to loot for profit. As he lay dying, Spector was approached by the Egyptian moon god Khonshu, who offered him a second chance at life in exchange for becoming his avatar on Earth. As a result, Spector was resurrected and given superhuman abilities. Upon his return to the United States, he invested the money that he had accumulated as a mercenary to make a fortune, and became the crimefighter "Moon Knight." He also created multiple identities, most notably that of millionaire Steven Grant, to distance himself from his mercenary past, and of taxicab driver Jake Lockley, to remain in contact with the street and criminal element.
The character has made appearances in various forms of media outside of comics, including animated series and video games. Moon Knight will make his live-action debut in an upcoming Disney+ television series centered around the character, set in the Marvel Cinematic Universe with Oscar Isaac starring in the eponymous role. The character was ranked by Wizard magazine as the 149th-greatest comic book character of all time. IGN also listed Moon Knight as the 89th-greatest comic book character, stating that Moon Knight is more or less the concept of what would happen if Batman were to have Dissociative identity disorder, and as #49 on their list of the "Top 50 Avengers".