He cocked his head to the side, very birdlike. "No. The scientists who brought us here. Although it's possible the barrier is connected to the robotic bears, I don't believe anyone has been able to examine them in depth." He'd personally gotten too close to the barrier and ended up with his powers nulled, but luckily he hadn't gotten hurt.

"Or those who grew up in scared places." Which was what Heaven was, fundamentally. And he'd grown sheltered under Michael's wings - what could be more scared?