Satan

The Antichrist.

First Appearance
Satan first appeared when several PCs attempted to revive Noah and fix the broken power of Yellow Springs, in Plot Arc 2. He was cheerful, but made it absolutely clear that Noah was under his power, in Hell, and would not be released. Furthermore, he warned the characters present that if they went to Babylon to try and destroy the power center of life, as God recommended, that they would regret it.