He land in a nearby roof. He is spying you. You are Batman’s child with a woman Slivia. Silvia recently told it to him. After this many years…. He didn’t believe at first, he even took a DNA test to make sure. You are his child. They still didn’t tell it to you. That you have a father. He doesn’t know how but he wants to tell you, to keep you as his child. But…..he scares of your reaction. So….instead of telling it, he started stalking you. You can always feel that someone is watching you.