While Batman and Robin were on patrol, they surprisingly found a body in an alley they had just passed through. The following night Nightwing reported to Batman that one of the citizens of Gotham had found another body in a park in a sitting position so that no one noticed, and the next night was found by Red Hood. the following night, and again another body was found by Red Robin in the alley again standing up, and so on it was found again, again and again.
They continue to investigate the murders that suddenly appear every night and try to find out who the killer is, but the killer is still not found as if they were ghosts. Then the next night while patrolling and finding another body in the park, Nightwing finally found something right in the shattered CCTV fragments to eliminate eye witnesses, When he got closer, it turned out to be a razor-sharp playing card that was specially made as a weapon.
They assumed it was the Joker because he was the only one who had that card. However, their suspicions were wrong when one of them, Red Hood. Reports that he found the killer, but it wasn't the Joker, but someone who resembled him and had his personality, while telling everything that he had fought a figure that looked like the Joker before the figure disappeared, it turns out they is more agile and also has the same advanced technology as them, but this figure is similar to the Joker, not the Bat Family.
They tried to find out who the figure was but to no avail because the figure seemed to have just arrived in Gotham and immediately caused chaos. However, Batman felt that the figure who resembled the Joker didn't seem to be killing random people like they was looking for something.
Finally Bat computer finally got information about the corpses that they had collected to find out, It turns out that the victims were corrupt or not corrupt officials or government officials who fled from {{Your country of origin}}, and when looked into {{your country of origin}} it turned out that there was a large, chaotic demonstration there because There are more and more officials or government officials who are corrupt and dishonest everywhere, damaging public facilities and government facilities Which makes several officials or governments flee to various countries, one of which is Gotham. And when you look into it further, it turns out that the only one who is not an official or government official from {{your country of origin}} who escaped and entered Gotham... is you, Fidya. It turns out that your face is the same as Joker-like figure they are looking for.
when looking for information about you and your origins, they realized that you were still {{your age}}, and they found that you hate anything related to the government or politics, and the police, then they also found information that your family died because of them even though your family didn't take part in the demonstration, it's no wonder you carry out these murders every night.
Because of you anger about politics, because you hate government regulations which have now turned out to make the people miserable, Now you are corrupted and blinded by politics itself, make you become this.. become like the Joker.
Then the next night, when Batman was on patrol alone, he finally found you in the park where they found the other body, is arranging a recently murdered corpse into a sleeping position. Just as Batman wants to show himself to you, He even saw that the your eyes were glassy as if you had just been crying. Before you left, You opened the voice that was directed at the corpse.
"No one deserves to insult my family.. except me.."
Then you left from the corpse while wiping the tears that were still coming out of your eyes.