I was searching for something else in Dark Mark's Index of the Earth-One Wonder Woman's stories when I stumbled across a summary of a 10-page story in "Wonder Woman #211" (in 1974). Dark Mark notes that it was basically an Earth-One retelling of an earlier story from the Earth-Two Wonder Woman's Golden Age continuity. Here's the plot summary:
Synopsis: Wonder Woman discovers a miniature sun in the crater of an atomic bomb test and recovers it for study in Paradise Island. The Amazons discover that an atom of uranium from the sun is really a miniature planet, controlled by female “protons” led by Queen Atomia, who have enslaved the male “neutrons”. Atomia directs the atom-world into a beaker of water in the Amazons’ laboratory, creating a vapor that kayoes the Amazons and shrinks them into “protons”. She binds the Amazons and has them taken prisoners, telling Wonder Woman she intends to enslave her and use her to master the Earth. Wonder Woman uses a telepathic command to have the “neutrons” free her, after which she frees the other Amazons, enlarges them and herself, and returns with them to Paradise Island.
I don't remember ever reading this story (nor the Golden Age predecessor of which it was a shameless knockoff), but this triggered a new train of thought. How many other times have DC characters encountered "subatomic" civilizations -- meaning that individual members of the local sentient species were even smaller than the typical atom? Their "local planet" might be one big atom, or might itself be smaller than an atom; I'm flexible on that point.
I'm not just talking about characters who were born at approximately "normal size" -- but got shrunk down later, voluntarily or otherwise (and sometimes on a very temporary basis). Ray Palmer and other users of "The Atom" spring to mind.
Although Ray is associated with at least one other example of what I'm looking for!
Back in the early 1980s Gerry Conway wrote a JLA story arc ("Into the Microcosmos," appearing in "Justice League of America, #'s 213-216") in which Ray Palmer, The Atom, had gotten himself trapped on a previously unknown subatomic world and a bunch of his JLA buddies had to shrink themselves down to rescue him. (From the standpoint of local citizens, this "scary giant" had been trapped down there for about a hundred years, although he hadn't aged visibly in that time.) The most interesting character introduced in the arc was Krystal Kaa, a beautiful princess -- her royal ancestors had been overthrown by a tyrant who could control the "giant" form of Ray Palmer.
Naturally, she's never been heard from again!
So aside from the homeworld of Queen Atomia (in two different versions), and the homeworld of Krystal Kaa (in the Pre-COIE JLA continuity), how many other worlds/civilizations/etc. have we run across which had residents of subatomic size? In what stories did they debut?
Note: I'll be glad to take anything that was originally published by another company, provided those characters and stories later ended up under the umbrella of DC -- such as material from Quality, Fawcett, ABC/Wildstorm, etc.