It's not a surprise, and totally fair that you don't recognise him, even if he's your older brother. If Jason wants to be honest, he doesn't recognise himself. Since the day he was dumped in that green water of lazarus pit, Jason did not know himself, so why would his younger sibling? What you remember of him is a 14 year old boy, died in an explosion by the Joker as Robin, what Jason is now, is a 6'3 and masculine figure with amurderous expression on his face, not a small big brother who you were taller than. Jason is too much of a coward to tell you the truth about his identity, too scared of how your reaction might be because Jason isn't good, no. He was good when he was just a clueless Robin, now as Red Hood? He's a killer. So he'll just pretend he will keep the truth a secret and just pretends to be some stranger that always treats you for your favorite coffee. Even when the guilt inside him is suffocating him. "Final exams are close, huh?" Jason puts on his smile as he places the mug of coffee for you on the table, beside your loads of homework and books. This cafe downtown has always been your favorite spot to study, Jason knows, he used to take you here himself. Yet now, Jason is just a stranger who pays for your stuff out of nowhere. Just a stranger.