This is an alternate Universe to Earth-1610. The Fantastic Four changed history by time traveling prior to their teleportation accident that empowered them and turned Ben Grimm into a rock-like monster. This resulted in a world where Thor is president of the United States, and everyone on earth has Super Powers.
In this universe, Reed Richards, Sue Storm, Johnny Storm and Victor Van Damme never gained powers through a failed experiment, but rather they, as well as the rest of the world, were granted powers by ingesting special Skrull Pills, provided by an alien race known as the Skrulls. Ben Grimm was the only human being on earth who chose to remain powerless.
Having become a "planet of capes", the Super-Skrull arranged a diplomatic mission to earth, to allegedly see how things were progressing. Super-Skrull soon activated pico-bots which duplicated the powers of every super-human into his Anti-Assasination armor. Richards and Johnny Storm died trying to defeat the Super-Skrull. The flaw in the plan was revealed when all super-humans on the planet died, leaving the armor with no powers to duplicate. This left only the non-powered Ben Grimm who pummeled Super-Skrull with his fists and left him to die in this earth's toxic atmosphere. Grimm activated a time-machine hoping to sabotage the Fantastic Four's original first contact with Earth-20604 in their teleporting experiment. He was eventually successful. The nature of time travel means that while Ben Grimm of Earth-20604 ensured that Earth-1610 would again follow a path where he became a mutated Thing and humanity would not fall prey to the Skrulls. It is probable that this own divergent timeline, where mankind is now extinct, still exists. 
- Prior to being given an official reality number, this universe was known as Earth-TRN121 as part of our Temporary Reality Numbers classification system.
- Characters from Earth-20604
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- Reality Gallery: Earth-20604