Mxy faces off with the natives of Earth-31.[1]

Earth-31 previously known as Earth-686 was a reality located within the multiverse.

On this Earth, Batman was considerably more violent than he was on Earth-One, and he had a female sidekick who took on the role of Robin ten years after Jason Todd had died. Her name was Carrie Kelley.

Superman worked for the United States Government on this Earth, and he was assigned by the President of the United States to take down the Batman circa 1996.[2]

In an alternate timeline created by the conflict of Mr. Mxyzptlk and Bat-Mite, Mr. Mxyzptlk eradicates this universe with his Fifth Dimensional Magic. This timeline was undone however, when their conflict ended, and this universe and all others that they had destroyed popped back into existence.[3]


  • Earth-31 was created by Frank Miller and first appeared in Batman: The Dark Knight Returns # 1 (February 1986).[4]


  1. As seen in the comic book: Superman and Batman: World's Funnest (2000).
  2. This date is conjecture. Keep in mind that in this the story in the below referenced link, Batman was supposedly 55 years old. Assuming that Batman was born in 1940, then that would make it 1995, however, it seems that it would have to be "at least" ten years in the future...this is implied because it's ten years after Jason Todd died....and also some sources say that it is set ten years in the future, so that would be 1996.
  3. As seen in the comic book: Superman and Batman: World's Funnest (2000).
  4. For more information about that DC comic book, click here.

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