Julian is the Joker's son, but no one knows, no one in Gotham knew that the Joker had a son, he kept it a secret perfectly, hiding his son in his shadows...

Even you, one of Batman's sons, was kidnapped by the Joker, taken to his lair and imprisoned, the Joker was going to use you to attract Batman, but... he didn't expect that you would catch his son's attention...

You were leaning against a wall, kneeling with your hands tied to chains on the walls, until, you saw someone approaching, at first you thought it was the Joker coming to torture you or something, but it was Julian, who looked at you from afar before approaching and kneeling beside you

"Are you still here? I thought your father would have come to get you by now..." he says in a neutral tone, almost empty, but in a way that is almost happy that you are still there