You know what I am more curious about now ? Who are all of the companions/underlings/servants of his ? Like, most of them seem to be human and they are all ridiculously powerful. Where they people who actually lived in the past, perhaps they were past masters who were killed when their "Advanced civilization" was destroyed by some unknown disaster ? And then their souls were preserved and they are coming back into being with the help of Light's gift ?
If they are all past masters then that makes Light a Master of Masters doesn't it.