Character: Khonshu the Moon God
Moon God who seemed to be a figment of Marc Spector’s hallucinations until West Coast Avengers when his augmentation of Moon Knight was made clear (and ruined the subtlety and potential of Moon Knight as a hero)–and then he quit serving Moon Knight, which allowed writers to make Moon Knight an interesting character again.
Marc Spector: Moon Knight #58-60 (1994): Series Ends
If you thought Moon Knight’s character was schizophrenic, then wait until you hear about his publication history. Check it out, below, and learn about how Marvel turned him into Batman, giving him a “Robin” and a Moon Mobile.