Peter stood, pushing his chair back and studying the man coming towards him. He had something of James around his eyes, and maybe a hint of Lily in his chin, but he didn't know Harry or his wife well enough to be able to find any other similarities to people he knew. In any case, Albus wasn't outright hostile, and was even pleasant, and that counted for a bit. But, they hadn't sat down, hadn't truly started talking to Albus yet.
After a moment's hesitation, Peter reached out to shake Albus's hand. "Hello. It's -- er. It's good to meet you."