I want to compile a list of superheroines who meet the following criteria.
1. In the 1990s or any earlier decade, she spent some time as a costumed crimefighter. ("Some time" could mean she did the superheroine bit in just one little story before Marvel promptly forgot about her!)
2. Her career as a superheroine is supposed to be part of the "regular continuity" of the main timeline (known as 616) of the modern Marvel Universe. It has happened "within the last several years" from the standpoint of the modern generation of heroes; i.e. sometime after Reed Richards and his friends first became "the Fantastic Four." (I don't care about people who only exist in parallel universes and timelines, or were only heroes back in the Golden Age and then retired, or will only become superheroes several decades in the future, or anything like that.)
3. She hasn't played a significant role in any published story in at least the last five years (let's say, not since the end of 2002 -- though she may have gotten the occasional cameo somewhere).
4. As far as we know, she's still alive, even if she hasn't done anything to prove it lately. (I admit that with various members of the X-Men and affiliated mutant groups, it can get awfully hard to keep track of whether or not they're "temporarily dead" this week!)
I'll start the bidding with:
1. Free Spirit (Cathy Webster). In the mid-90s, she was an apprentice of Captain America's for about a year in his old title, during the last phase of Mark Gruenwald's very long run as the regular writer for Cap. Since then, she has never gotten a single line of dialogue in any published story in over a decade -- to the best of my knowledge.
(I do what I can for her -- over on Marvel.com's Fan Fiction board, I'm a regular participant in a monthly contest. Each time, I crank out another chapter in an ongoing serial narrated by Cathy. I never actually win, but at least it gives me deadlines to exert myself to meet.)
2. The Phantom Blonde (Wanda Mason). Wanda is the daughter of Louise Mason, who was "the Blonde Phantom" in the Golden Age. In the "Sensational She-Hulk" series of the late 80s/early 90s, Louise was brought back into the spotlight (after an absence of decades) as a confidante of She-Hulk's. Her grown daughter Wanda was eventually introduced and (at least briefly) attempted to follow in her mom's heroic footsteps by switching the word order around in the heroic alias to become "The Phantom Blonde." After that title was cancelled, Wanda never got another word of dialogue in anything, to the best of my knowledge.
Anyone care to add some other Obscure Superheroines of the Marvel Universe? Ladies who used to "fight the good fight" but essentially faded into limbo many years ago?