This is a test render I did many months ago. My idea was to put many of my characters (some of then were never used) against an alien invasion.
I didn´t liked the end result.
But, I´m sharing this image to explain a law from my heroines universe.
Generally they die in their adventures, only to appear again in another story (and probably die again). The answer to this possibility is the fact that there are many alternate realities.
Every event has many outcomes, and each outcome creates a parallel universe where it´s real. So, if a superheroine died fighting an villainess, in another reality she triumphed, only to fall before another enemy... it´s an infinite cycle...