Nine years later, the Joker’s story still plagues our imaginations. He does give us two backstories to his scars, neither of which are the real reason for his scars. Fans’ imaginations since then went wild in generating a background for the Batman’s greatest foe, the most liable theory thus far being “otter pops.”
Now, I shall propose my own theory.
The Joker was born George William Berkowitz, son of Metropolis’ Mayor Frank Berkowitz. Before Superman’s uprising, Mayor Berkowitz ran for office during a time of terrorist struggle in Metropolis. Within his first year elected mayor, a horrific terrorist attack blew up Metropolis Elementary. George got out okay but his mother, one of the school’s nurses, never saw daylight again. From there, Mayor Berkowitz set up the Metropolis Terrorist Initiative, which sent the troops into 24/7 surveillance around the city borders. The people’s stable minds worsened as the army declined into greater financial debt. As a plus, the crime rate in Metropolis just continued to increase, for those terrorists were already in the city.