A world in which he Superman is Superwoman, Supergirl is Superboy, and Wonder Woman is Wonder Warrior?
Sure.
Sasha Wood from Casually Comics has the story about Superman #349 from 1980: "The Turnabout Trap!"
Let us know in the comments below if you know of more comics like this one.
By the way, Casually Comics has also a video about gender bending pink kryptonite. More about that over at Crossdream Life.
