Moon Knight Poster # 1 by Bill Sienkiewicz Disney+ TV Series

Moon Knight was created by writer Doug Moench and artist Don Perlin, and first appeared in Werewolf by Night #32 (Aug 1975).

It is later revealed Moon Knight has dissociative identity disorder (DID) (incorrectly referred to as schizophrenia in some stories) and that the alters known as Grant and Lockley originally manifested during his childhood. Other subsequent alter egos who do not assume the Moon Knight identity have emerged at other points during his adulthood, including a werewolf-fighting astronaut; impersonators of Khonshu, Spider-Man, Wolverine, Captain America, Iron Man, and Echo; and a red-haired little girl known as the Inner Child (who first appeared in the Ultimate Marvel continuity). It is debated in different stories whether Spector has genuine DID due to childhood trauma or if his similar symptoms are the result of "brain damage" caused by his psychic connection to Khonshu,

Oscar Isaac portrays Marc Spector / Moon Knight, Steven Grant / Mr. Knight in the Disney+ Seri