Sirius mouth quirked in a wry, slightly bitter smile. "Look out for your own skin first. That should have been the bloody family motto." Not really, thought it felt like it. Blacks tended toward fanatic loyalty or monumental self absorption. Sometimes at the same time, even. "Dar old mum probably missed you - no one to boss about once you were gone." And Sirius had missed him, though by that time he'd been used to Regulus not being any part of his life. It didn't mean he hadn't mourned.
He scowled. "I know what they are. What does that have to do with Harry? He wasn't even crawling when you vanished."