Bushman: What the-?! Moon Knight again- but it can't be! You're dead!
Moon Knight: I died in the tomb, Bushman? remember? You can't kill me - nothing can!
Marc Spector, AKA the Moon Knight, is a lesser-known Marvel Comics superhero who debuted in Werewolf By Night #32 (August, 1975). He was created by Doug Moench and Don Perlin. Spector was once a U.S. Marine, but quit and became a mercenary when he went to Egypt. There, he befriended French pilot Jean-Paul DuChamp, often referred to simply as "Frenchie", while working for Raoul Bushman. The trio soon find an archaeological dig that unearthed a temple that contained a statue of the moon god Khonshu. Bushman decided to loot the site, and in so doing, killed the lead researcher, Dr. Alraune. In response, Spector picked a fight with Bushman that does not go as well as planned.As Spector lays dying, Khonshu appears to him in a vision and offers to bring him back to life if he becomes the god's avatar on Earth. He does. After repaying his new Arch-Enemy Bushman, he goes back to America with Frenchie and the late Dr. Alraune's daughter Marlene. Deciding to become a crime-fighter, Spector creates a silver cloaked costume and becomes the Moon Knight. Ashamed of his mercenary past, he invests the money he developed from those jobs, develops a small fortune, and creates the identity of Steven Grant, as well as the other identity of common taxicab driver Jake Lockley.Later incarnations have had him lose his grip on reality and treat each of these personae as different people, among other identities crafted to suit his needs. Also commonly seen as a Captain Ersatz of Batman, due to the "millionaire playboy" Steven Grant personality and cape-wearing overly-thematic nighttime vigilantism.Recently entered the spotlight (kind of) as an official member of Captain America's Steve Rogers' Secret Avengers after Siege.
Ballistic Discount: Carson Knowles, better known as the villain Black Spectre, is buying a crapton of medieval weaponry and armour, and the dealer refuses to hand over anything until he sees payment. Knowles tosses a bag at his feet and begins picking up his weapons, while the dealer opens the bag and complains there's nothing in there. He promply says "Oh @#$%"when the penny drops.
C-List Fodder: Given that it took this long to give him a page of his own...
Often referenced in his own series. He even recalls his time as an Avenger: "Sent me to the West coast B team.". He finally made it to the A-List as a member of the Secret Avengers. The only problem is that nobody else knows he's A-list now.
In his 2011 series, he finds himself unwittingly up against Count Nefaria, a man who has taken on the Avengers in the past (as in: all of them, at once, by himself), who is more than a little irate his plans are being tripped up by someone he didn't even recognise at first.
Echo, frequent guest star of the same series. Played for Laughs when she calls the Avengers mansion under her real name.
Ms. Marvel:"Who is this?" Echo:"This is Maya Lopez." Ms. Marvel:"Um, who are you and how did you get this number?" Echo:"Carol, it's me, Maya Lopez." Ms. Marvel:"Um." Echo:"Echo." Ms. Marvel.:"Oh. Oh, hey." Echo:"You didn't remember my name, did you?" And shortly after Luke Cage:"Who was that?" Ms. Marvel:"That was Echo." Spider-Man:"Hey, yeah, she used to be on the [Avengers]." Wolverine:"You just noticed she was gone?"
Confusion Fu: In the Bendis series, his additional personalities (namely, Captain America, Spider-Man, and Wolverine) cause Moon Knight to start using their respective weapons in a fight. To say that this is unexpected by his opponents is an understatement.
Evil Costume Switch: Oddly enough, hasn't happened to Moon Knight, but rather his sidekick, Midnight..
It may not have happened in the 616 'verse, but in the Ultimate universe, at one point he creates a fake villain persona known as Ronin in order to work his way into the Kingpin's organization and ends up Becoming the Mask.
Heroic Bystander: Upon being attacked by three supervillains at once, Moon Knight manages to defeat two of them but is tied up by Coachwhip's electrical coils. Coachwhip is about to fry Moon Knight when a bystander sprays her with a hose, shorting out her equipment and knocking her out from the feedback.
I Work Alone: Subverted. Despite his loner identity and typically taking on most of the hard work on missions, Moon Knight openly relies on his partner Frenchie. He even adopts a sidekick at one point.
in Marvel Knights he practically begs Deardevil to let him on the team.
Sherlock Scan: A minor enemy of Moon Knight called The Profile specializes in this, literally to the point of it being a superpower. He is eventually defeated due to Moon Knight being an agent of a god. While the Knight himself could be analyzed, the god could not due to not being present.
Show Within a Show: In the New Moon Knight ongoing. There is a Xena like show based on his adventures called "Legend of Konshu".
Sidekick: He reluctantly takes on a sidekick in the form of Midnight at one point. Midnight is later turned into a cyborg and Moon Knight is forced to kill him.
In the current ongoing, the personalities are Marc Spector, Captain America, Wolverine, and Spider-Man. Interestingly, the personalities aren't dissociative, they are always active and aware of each other. Marc is the head personality, while the others usually just give advice and comment on the current situation (Marc describes them as more "voices, " rather than whole personalities). At times, Marc calls in one of the other personalities to fight for him. Also, unlike most characters with the condition, Marc is completely fine with all the different personalities, and so are they. When Echo is killed, the Wolverine personality destroys the other two and drives Marc into Unstoppable Rage. By the end of the series, his companion personae appear to be Wolverine, Echo, and Iron Man.
Split Personality Takeover: In the Ultimate universe Warriors story arc, Moon Knight creates the persona of Ronin to infiltrate and take down the Kingpin; he ends up losing control, and Ronin takes over. However, Ronin eventually comes back to "wake up" Moon Knight again.
Maybe not a complete takeover, but in the Bendis series, when Echo is killed, the Spector's Wolverine personality actually destroys the Captain America and Spider-Man personalities and drives Marc into an Unstoppable Rage.
Thememobile: While Moon Knight's Jake Lockley persona is a cab driver, Moon Knight typically travels by way of moon-shaped helicopter. For some reason, this does not attract attention.
To be fair, in the Marvel Universe, that's probably isn't that out of the ordinary.
Thou Shalt Not Kill: Subverted. In the prologue to the The Bottom arc, Moon Knight is almost defeated by his nemesis Bushman, but saves himself at the last minute by carving Bushman's face off with a crescent knife.
Unstoppable Rage: When Echo is killed by Count Nefaria, Moon Knight's Wolverine personality drives him into a rage, causing him to seriously injure the Count. Nefaria (a villain on the power level of Thor) is actually forced into a stunned retreat to recover, and Moon Knight wakes up later chained to a hospital bed.
Weapon of Choice: His arsenal is pretty unstable, having used a spiked gauntlet, a bow, guns that fire bolas, and a whole bunch of other weapons. His main weapons, however, are are a truncheon that can become a grapling hook or nunchuks, and "crescent darts", shuriken shaped like a crescent moon. In the Secret Avengers, he uses a gun that shoots crescent shocktoxin darts.
This is outdone by the fact that he keeps the carved off face as a memento. Khonshu appears to him as a faceless Bushman from this point on. Two arcs later, while struggling with personality issues, Spector retrieves the face-mask and puts it on before being caught by Marlene, who flees screaming.