Originally Posted by
Ravin' Ray
The Heroes Reborn Earth wasn't called a "Counter-Earth" until it was moved to the 616 universe and placed opposite the Sun. It was this Earth where the original Fantastic Four, Avengers, and Doom were all sent to. There they interacted with the native superheroes, villains and civilians such as Wyatt Wingfoot, Alicia Masters, the Royal Family of the Inhumans (except for Crystal who was among the Avengers sent), She-Hulk, Kang, etc.
Onslaught Reborn resulted in Franklin creating another pocket universe with its own Earth and heroes and villains which shared the costumes of their Heroes Reborn counterparts.