The Doctor & Lorna Dane
"I don't," he confirmed. "Time Lord." It wasn't as though it was any sort of secret. It just wasn't immediately obvious to most people because humans happened to look Time Lord. Peter had only picked up on it by being able to hear both his heart beats.
"Me too. Sitting still is just impossible sometimes." And this place involved a lot of sitting still. Normally, he could leave a place, or a time, and make his own fun.