Michael notes the name and mentally files it away. That aligns with what he knows of the Greek pantheon on his Earth, but of course he's never been close to any of the pagan gods. There could be other children of Hades, as there apparently are here.

"Have you? Interesting. I had thousands of siblings back home, but I've yet to acquire any new ones here."

Maybe the Singularity thinks the two true siblings he already has here in Abraxas are enough. Michael would certainly agree.

"The God, as He prefers to be called. Last time He was on Earth, He was going by Chuck. Perhaps you've heard of Yahweh? God of the Christian and Jewish faiths, among others? He rarely makes Himself known, so it wouldn't surprise me if you'd never met."