In the "Emperor Joker" comic arc, the Joker gains 99.9% of Mr. Mxyzptlk's reality-altering powers, creating a twisted universe where heroes become villains and vice versa. Superman, with the help of other heroes, eventually restores reality by exploiting the Joker's dependence on Batman for his identity. The Spectre transfers Batman's trauma from the Joker's torture to the Joker himself as punishment, leaving Batman unharmed and the Joker incapacitated.
Here are the key facts extracted from the text:
1. The Joker became a god in a Superman comic series titled "Emperor Joker".
2. Mr. Mxyzptlk, a fifth-dimension being, gave 0.1% of his power to the Joker.
3. The Joker tricked Mr. Mxyzptlk into saying his name backward, making him vulnerable.
4. The Joker then switched powers with Mr. Mxyzptlk, gaining 99.9% of his power.
5. With his new powers, the Joker rewrote history, turning heroes into villains and vice versa.
6. Superman became a villain under Lois Lane's control, who became a Lex Luthor-like figure.
7. Other heroes were also transformed: Aquaman became half-fish, Wonder Woman feared men, and Flash became a food-compulsive man named Flush.
8. Batman was tortured by the Joker but never killed outright because the Joker needs Batman.
9. Superman formed a resistance with other heroes to fight against the Joker's altered reality.
10. Lex Luthor refused to comply with the Joker's rule and was killed and resurrected by the Joker for humiliation.
11. The Spectre informed Superman that reality was at risk due to the Joker's constant changes.
12. Superman realized that the Joker's power was limited by belief, specifically his belief that he cannot defeat Batman.
13. The Spectre transferred all of Batman's traumas from the Joker's torture into the Joker himself as punishment.
Please let me know if you need more details or further clarification on any of these points.