The "Evil" God of darkness, Sierra.

I didn't plan to make him a giant purple dragon at first. Ignis is supposed to be the most badass looking one but I guess Sierra is taking the spot now.

In the story, Sierra is sealed (thrice) in the Dead Sea. His cult is responsible for most of the problems occuring all over Ahntrolan and it's up to the protagonists to defeat all of them as they collect the artifacts required to take down Sierra once and for all as part of the agreement between Sierra and the other gods.