The early 1980s was an odd transitional time for Batman. Though the character had gained some cachet in the 1970s, the crusader was not even close to being the financial juggernaut he became later, partly though not solely thanks to the 1986 DARK KNIGHT RETURNS and the 1989 Tim Burton opus. At some point in the 1980s, either before or during the hiring of Doug Moench as sole scripter of Batman in both his titular book and in DETECTIVE COMICS, DC Comics attempted to goose the sales of both titles by having the stories interconnected. That is, if one story with a villain (say, the subject of my essay, Nocturna) began in BATMAN #363, that story's conclusion would appear in the subsequent issue of DETECTIVE COMICS, and the next story in BATMAN might begin a new narrative. This editorial ploy was spectacularly unsuccessful, for most regular consumers resented being forced to buy two titles a month to make sense of the stories. Sales went down and the idea was dropped, though not before Moench left the series in 1985.
At the time he accepted the DC assignment, Moench's last major opus had been on Marvel Comics' MASTER OF KUNG FU. That series had garnered high praise from fans, particularly for Moench's ability to weave a diverse group of characters, male and female, into a bracing melodrama, and one far more intricate than most Marvel comics of the early eighties. Given that Moench had been given the chance to be the main arbiter of the mainstream Batman continuity, he may have approached the assignment with the idea of repeating some of his fan-pleasing tropes from MASTER OF KUNG FU. That series had focused upon a group of heroic individuals bound by a common code rather than by family bonds, while the only familial relation of the series was the inimical one between Shang-Chi and his father Fu Manchu.
In contrast, prior to Moench's assignment, DC had just taken the first steps to introduce Second Robin Jason Todd to take the place of Dick Grayson, who was in the process of transitioning away from the Robin identity. Thus Batman had just gained a new surrogate son to share his adventures. In addition, during the pre-Moench period an old Bruce Wayne girlfriend, Vicky Vale, had been re-introduced, and another potential romantic interest for Wayne, Julia Pennyworth, had debuted. However, Moench injected two new characters, first seen to share a loose sibling-like history: Nocturna and the Night-Thief (a.k.a. "Night Slayer.") Whereas there were no mothers of significance in the MASTER OF KUNG FU series, Nocturna was soon defined by her taking the place of Jason Todd's recently deceased mother, just as Batman had taken the place of the orphan's late father.
Nocturna comes very close to rivaling Catwoman in the BATMAN mythos as the essence of a "dangerous yet desirable femme fatale," but in my estimation she never rises above the level of a near-myth. Possibly the character's many poetic ramblings about the beauties of darkness (she's an albino who avoids the sun) are meant to sell her as the embodiment of feminine mystery, of the principle of "Yin" perhaps. However, Moench rides the metaphor like a hobby horse, thus diluting its effect. However, where Catwoman had little or nothing to do with Dick Gayson, Nocturna inserts herself into Jason Todd's life in the second part of her first story, in DETECTIVE #530. Moench is a little vague about the sequence of events, but in the first part, Batman catches the Night-Thief but fails to capture Nocturna. She then apparently just happens to use a high-powered telescope to check out stately Wayne Manor, which eventually leads to her discovery of Bruce Wayne's double identity. At this point Jason has not yet donned a Robin costume, and he's decided to desert Wayne's charity because Batman won't let him become a junior birdman yet. For no rational reason, Nocturna sees Jason leave the manor, seeks him out, and talks him into returning to Wayne's tutelage, despite the fact that she should know nothing about him at this time.
Moench then allows Nocturna and Night-Thief to recede from the picture for several issues, until DETECTIVE #543. She then appears to Jason again, acting very mysterioso, and laying some vague maternal claim upon him. By issue's end, she files a suit to legally adopt Jason, which Wayne has neglected to do. Presumably she knows that Wayne is Batman by this time, though she does not say so until a later issue. But the reader may well assume that knowledge, for when she first meets Wayne, she proposes solving their rival claims on the boy by getting married.
Jason's reaction to the lawsuit makes Wayne's case harder, for he claims he wants Nocturna to be his new mother. His motive, though, is loyalty to Batman, for by this time he does know that the mysterioso woman is a thief, and he abets her adoption with the idea of getting the goods on her crimes. This leads to the strangest scene in the entire Moench run, in BATMAN #379. I should note here that Jason is drawn to look about fifteen, even though some sources claim he was supposed to be twelve. Yet, on one of his first nights under Nocturna's roof, she comes to his room to tell him a "bedtime story," an activity one associates with much smaller children. I'm sure Moench's main motive was to provide yet another poetic reflection on darkness, but the "bedtime story" ends with some puzzling dialogue about whether or not Jason would be susceptible to Nocturna's charms if he were just a little older. Moench doesn't pursue the concept of hebephilic sexuality in later issues, so I assume he was just playing around with Oedipal imagery as a side-issue to his main theme, the blossoming romance between Batman and yet another "forbidden femme fatale."
Most of the ensuing issues are more concerned with the triangular romantic conflict between Batman, Nocturna and Night-Thief, but the alluring albino makes a conquest in Jason Todd, who toward the end of Moench's run goes so far as to forget legal impropriety and to refer to the enchantress as "Mom." By this time Moench may have planned to leave the series, for he arranges a send-off for Nocturna in the form of an ambivalent death. But unlike so many other comics-characters, Nocturna did not get revived in continuity with her original form-- for in the last Nocturna-arc, the Earth is suffering the first signs of the Crisis on Infinite Earths. Thus once DC-reality was rewritten by the Crisis, any version of Nocturna that returned would exist out of continuity with the original-- and indeed, another Nocturna did pop up somewhere later, though I've not endeavored to check out this later character. I should also note that in the last arc Catwoman returns to challenge Nocturna for Batman's affections, and Catwoman more or less "wins" the bout. I imagine Moench had Catwoman somewhat in mind when he created his seductive lady crook, and maybe he was gratified that no other author would ever "lay hands" on his character, thanks to the exigencies of DC Comics' total reboot of their cosmos.